NEET Biology Digestion and Absorption Question Bank

done Physiology of Digestion Total Questions - 171

• question_answer1)
  Digestion is defined as conversion of:
  A)
  nondiffusible food elements into diffusible constituents done clear
  B)
  large food particles into smaller ones done clear
  C)
  soluble food into protoplasm done clear
  D)
  starch into glycogen done clear
  View Solution play_arrow

• question_answer2)
  Essentially the word 'digestion' means:                                            (CPMT 2005; JIPMER 2006)
  A)
  burning of food        done clear
  B)
  oxidation of food done clear
  C)
  hydrolysis of food      done clear
  D)
  breakdown of food done clear
  View Solution play_arrow

• question_answer3)
  All digestive enzymes are:
  A)
  ligases                           done clear
  B)
  oxidases done clear
  C)
  hydrolases                      done clear
  D)
  transferases done clear
  View Solution play_arrow

• question_answer4)
  In hydrolysis, a small amount of energy is released as:
  A)
  heat                              done clear
  B)
  light done clear
  C)
  kinetic energy                 done clear
  D)
  potential energy done clear
  View Solution play_arrow

• question_answer5)
  Digestive process in human being is:                                              (BHU 2002)
  A)
  intracellular             done clear
  B)
  extracellular done clear
  C)
  both of these           done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer6)
  Largest variety of digestive enzymes is found in:                                          (BV Pune 2004)
  A)
  parasites                        done clear
  B)
  omnivores done clear
  C)
  herbivores                      done clear
  D)
  carnivores done clear
  View Solution play_arrow

• question_answer7)

  Consider the following statements:

  Assertion [A]: Polypeptidase acts on the peptide linkages of proteins and breaks them into smaller molecules. Water molecules are necessary for this reaction.

  Reason [R]: All digestive enzymes belong to hydrolase class. Now select your answer from the answer code given below:

  A)
  Both [A] and [R] are true and [R] is the correct explanation of [A] done clear
  B)
  Both [A] and [R] are true but [R] is not the correct explanation of [A] done clear
  C)
  [A] is true but [R] is false done clear
  D)
  [R] is true but [A] is false done clear
  View Solution play_arrow

• question_answer8)
  In mammals, the digestion of starch starts from:                  (BHU 2001; Pb. PMT 2003; Orissa JEE 2007)
  A)
  mouth                           done clear
  B)
  stomach done clear
  C)
  duodenum                     done clear
  D)
  oesophagus done clear
  View Solution play_arrow

• question_answer9)
  The delicious food generally makes mouth watery. This is due to:                                          (JKCMEE 2002)
  A)
  neural response        done clear
  B)
  optic response done clear
  C)
  hormonal response          done clear
  D)
  olfactory response done clear
  View Solution play_arrow

• question_answer10)
  Digestion of carbohydrates is affected by:
  A)
  pepsin                           done clear
  B)
  erepsin done clear
  C)
  steapsin                         done clear
  D)
  amylopsin done clear
  View Solution play_arrow

• question_answer11)
  Daily secretion of saliva in man is about:                                                               (Orissa JEE 2004)
  A)
  100 mL                         done clear
  B)
  250 mL done clear
  C)
  500mL                          done clear
  D)
  1000 mL done clear
  View Solution play_arrow

• question_answer12)
  A lubricant, mucin in saliva is made up of:                                                 (Pb. PMT 2004)
  A)
  myosin                          done clear
  B)
  glycoprotein done clear
  C)
  phospholipids                 done clear
  D)
  polysaccharides done clear
  View Solution play_arrow

• question_answer13)
  Ptyalin is secreted by:
  A)
  Gastric gland                  done clear
  B)
  Salivary gland done clear
  C)
  Digestive gland               done clear
  D)
  Brunner's gland done clear
  View Solution play_arrow

• question_answer14)
  Saliva contains:                          (Manipal 2004)
  A)
  ptyalin                           done clear
  B)
  lipase done clear
  C)
  trypsin                           done clear
  D)
  rennin done clear
  View Solution play_arrow

• question_answer15)
  Saliva contains the enzyme:           (CPMT 2003)
  A)
  amylase                         done clear
  B)
  maltase done clear
  C)
  invertase                        done clear
  D)
  sucrose done clear
  View Solution play_arrow

• question_answer16)
  Match the pair:
  A)

  Adrenal cortex

  Vasopressin

  done clear
  B)

  Salivary glands

  Amylase

  done clear
  C)

  Pituitary glands

  Thyroxine

  done clear
  D)

  Islets of Langerhans

  Secretin

  done clear
  View Solution play_arrow

• question_answer17)
  Salivary amylase is also known as:                                                Manipal 2005)
  A)
  ptyalin                           done clear
  B)
  gastrin done clear
  C)
  glyoxylase                      done clear
  D)
  pepsin done clear
  View Solution play_arrow

• question_answer18)
  pH of saliva is:                                                                            (Orissa JEE 2006)
  A)
  7                      done clear
  B)
  8 done clear
  C)
  6.8                                done clear
  D)
  9.5 done clear
  View Solution play_arrow

• question_answer19)
  Ptyalin acts upon:
  A)
  fat                                done clear
  B)
  lipid done clear
  C)
  starch                            done clear
  D)
  protein done clear
  View Solution play_arrow

• question_answer20)
  Ptyalin of saliva acts in:
  A)
  slightly acidic medium   done clear
  B)
  slightly alkaline medium done clear
  C)
  neutral medium         done clear
  D)
  all types of media done clear
  View Solution play_arrow

• question_answer21)
  Ptyalin cannot work in stomach because it is:
  A)
  inactivated by HCl      done clear
  B)
  inactivated by rennin done clear
  C)
  inactivated by pepsin   done clear
  D)
  carbohydrate digesting done clear
  View Solution play_arrow

• question_answer22)
  Substrate of enzyme amylase is:
  A)
  fat                                done clear
  B)
  starch done clear
  C)
  protein                           done clear
  D)
  sugarcane done clear
  View Solution play_arrow

• question_answer23)
  Which one is different from the category of other three?
  A)
  Ptyalin                          done clear
  B)
  Secretin done clear
  C)
  Gastrin                          done clear
  D)
  Glucagon done clear
  View Solution play_arrow

• question_answer24)
  Carbohydrates ingested in the diet are hydrolysed by the enzyme:                            (WB-JEE 2006)
  A)
  pepsin                           done clear
  B)
  cellulase done clear
  C)
  a-amylase                      done clear
  D)
  glycosidase done clear
  View Solution play_arrow

• question_answer25)
  Starch is converted to maltose by the action of:                                                      (MH-CET2006)
  A)
  sucrase                          done clear
  B)
  maltase done clear
  C)
  invertase                        done clear
  D)
  amylase done clear
  View Solution play_arrow

• question_answer26)
  An enzyme which brings about conversion of starch into maltose is:                       (PCS 2002)
  A)
  invertase                        done clear
  B)
  diastase done clear
  C)
  catalase                         done clear
  D)
  maltase done clear
  View Solution play_arrow

• question_answer27)
  Which of these statements about starch digestion is false?
  A)
  It begins in the mouth done clear
  B)
  It occurs in the stomach done clear
  C)
  It requires the action of pancreatic amylase done clear
  D)
  Its digestion is completed in the small intestine done clear
  View Solution play_arrow

• question_answer28)
  1-4 glycosidic bonds are broken when:
  A)
  Lipid is digested by lipase done clear
  B)
  DNA is digested by nucleas done clear
  C)
  Protein is digested by pepsin done clear
  D)
  Starch is digested by amylase done clear
  View Solution play_arrow

• question_answer29)
  Protein digestion is carried out by:
  A)
  proteolytic enzymes     done clear
  B)
  proteoses done clear
  C)
  peptides                done clear
  D)
  all of these done clear
  View Solution play_arrow

• question_answer30)
  Protein digestion is necessary because proteins:
  A)
  are large molecules done clear
  B)
  are complex molecules done clear
  C)
  cannot be absorbed as such done clear
  D)
  have a number of amino acids done clear
  View Solution play_arrow

• question_answer31)
  Digestion of protein takes place in:
  A)
  intestine and rectum done clear
  B)
  stomach and duodenum done clear
  C)
  small and large intestine done clear
  D)
  stomach and oesophagus done clear
  View Solution play_arrow

• question_answer32)
  Stomach is the site of digestion mainly of:                                                              (WB-JEE 2006)
  A)
  fats                               done clear
  B)
  proteins done clear
  C)
  minerals                         done clear
  D)
  carbohydrates done clear
  View Solution play_arrow

• question_answer33)
  A rabbit eats a lot of gram. Then its digestion starts in:                                              (RPMT 2001)
  A)
  ileum                             done clear
  B)
  stomach done clear
  C)
  mouth                           done clear
  D)
  duodenum done clear
  View Solution play_arrow

• question_answer34)
  Digestion of protein in starts from:
  A)
  mouth                           done clear
  B)
  stomach done clear
  C)
  duodenum                     done clear
  D)
  oesophagus done clear
  View Solution play_arrow

• question_answer35)
  Stomach is the site of digestion of mainly:
  A)
  fats                               done clear
  B)
  proteins done clear
  C)
  carbohydrate            done clear
  D)
  all of these done clear
  View Solution play_arrow

• question_answer36)
  The pH of stomach ranges between: (Karnataka CET 2001; Uttarakhand PMT 2007; BV Pune 2008)
  A)
  1.5 to 2.0                      done clear
  B)
  6.8 to 7.2 done clear
  C)
  7.1 to 8.2                      done clear
  D)
  7.6 to 8.6 done clear
  View Solution play_arrow

• question_answer37)
  Gastric juice has a pH of about:                                        (Orissa JEE 2003, 08; MPPMT 2010)
  A)
  1                     done clear
  B)
  2 done clear
  C)
  5                     done clear
  D)
  6 done clear
  View Solution play_arrow

• question_answer38)
  If pH of stomach is made 7, which component of food would be affected?
  A)
  Fat                                done clear
  B)
  Starch done clear
  C)
  Protein                          done clear
  D)
  Sucrose done clear
  View Solution play_arrow

• question_answer39)
  Which of the following digestive juices have the minimum pH?                                (AIIMS 2002)
  A)
  Bile                               done clear
  B)
  Saliva done clear
  C)
  Gastric juice                   done clear
  D)
  Pancreatic juice done clear
  View Solution play_arrow

• question_answer40)
  Which two enzymes are present in human gastric juice?
  A)
  HCl and pepsin         done clear
  B)
  Pepsin and rennin done clear
  C)
  Trypsin and erepsin         done clear
  D)
  Trypsin and rennin done clear
  View Solution play_arrow

• question_answer41)
  Which cells of gastric mucosa secrete pepsinogen?                                                   (DPMT 2007)
  A)
  Goblet                           done clear
  B)
  Parietal done clear
  C)
  Oxyntic                         done clear
  D)
  Chief cells done clear
  View Solution play_arrow

• question_answer42)
  Zymogen cells of gastric glands secrete:
  A)
  pepsin                           done clear
  B)
  trypsin done clear
  C)
  pepsinogen                     done clear
  D)
  chymotrypsin done clear
  View Solution play_arrow

• question_answer43)
  Find out the correctly matched pair:                                                                      (Kerala PMT 2007)
  A)

  HCl	Goblet cells

  done clear
  B)

  Ptyalin

  Acinar cells

  done clear
  C)

  Mucus

  Oxyntic cells

  done clear
  D)

  Pepsinogen

  Zymogenic cell

  done clear
  E)

  Pancreatic juice

  Salivary glands

  done clear
  View Solution play_arrow

• question_answer44)
  Pepsinogen is activated by:
  A)
  pepsin                           done clear
  B)
  trypsin done clear
  C)
  chymotrypsin                 done clear
  D)
  hydrochloric acid done clear
  View Solution play_arrow

• question_answer45)
  Which of the following enzyme digest protein in stomach? (Wardha 2006; MPPMT 2006; BV Pune 2007; Manipal 2008; BHU 2008; DPMT 2008)
  A)
  Pepsin                           done clear
  B)
  Trypsin done clear
  C)
  Erepsin                          done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer46)
  Main enzyme present in gastric juice is:
  A)
  lipase                            done clear
  B)
  pepsin done clear
  C)
  amylase                         done clear
  D)
  trypsin done clear
  View Solution play_arrow

• question_answer47)
  Pepsin is secreted by:
  A)
  liver                              done clear
  B)
  gonads done clear
  C)
  stomach                        done clear
  D)
  intestine done clear
  View Solution play_arrow

• question_answer48)
  Pepsin is secreted by:
  A)
  liver                              done clear
  B)
  pancreas done clear
  C)
  zymogen cells          done clear
  D)
  epithelial cells done clear
  View Solution play_arrow

• question_answer49)
  Peptic cells secrete:                          (DPMT 2005)
  A)
  HCl                               done clear
  B)
  Pepsin done clear
  C)
  Gastrin                          done clear
  D)
   Cholecystokinin done clear
  View Solution play_arrow

• question_answer50)
  Pepsin digests:
  A)
  fat                                done clear
  B)
  cellulose done clear
  C)
  protein                           done clear
  D)
  carbohydrate done clear
  View Solution play_arrow

• question_answer51)
  Which enzyme will digest protein if pH is 1.6?
  A)
  Pepsin                           done clear
  B)
  Trypsin done clear
  C)
  Peptidase                       done clear
  D)
  Propepsin done clear
  View Solution play_arrow

• question_answer52)
  Enzyme pepsin acts in:                                                                 (Orissa JEE 2007)
  A)
  mouth done clear
  B)
  intestine done clear
  C)
  acidic medium in the pancreas done clear
  D)
  acidic medium in the stomach done clear
  View Solution play_arrow

• question_answer53)
  The enzyme used to convert proteins into proteoses and peptones is:
  A)
  erepsin                           done clear
  B)
  trypsin done clear
  C)
  pepsin                           done clear
  D)
  peptidase done clear
  View Solution play_arrow

• question_answer54)
  pH at which pepsin acts is:            (JCECE 2003)
  A)
  5.8                                done clear
  B)
  6.8 done clear
  C)
  7.0                                done clear
  D)
  2.0 done clear
  View Solution play_arrow

• question_answer55)
  Pepsin converts:                            (BHU 2004)
  A)
  fats into fatty acids         done clear
  B)
  glycogen to maltose done clear
  C)
  sucrose to glucose      done clear
  D)
  proteins to peptones done clear
  View Solution play_arrow

• question_answer56)
  Medium in which pepsin active is:                                                                         (Har. PMT2007)
  A)
  acidic                            done clear
  B)
  neutral done clear
  C)
  isotonic                          done clear
  D)
  alkaline done clear
  View Solution play_arrow

• question_answer57)
  Enzyme pepsin acts upon food at a pH of about:
  A)
  three to split proteins done clear
  B)
  two to split carbohydrates done clear
  C)
  seven to change proteins to peptones done clear
  D)
  two to change proteins into amino acids done clear
  View Solution play_arrow

• question_answer58)
  Identify the correct set which shows the name of the enzymes from where it is secreted and substrate upon which it acts:                                                                                                                          (Orissa JEE 2002)
  A)

  Pepsin

  Stomach wall

  Caesin

  done clear
  B)

  Ptyalin

  Intestine

  Maltose

  done clear
  C)

  Chymotrypsin

  Salivary gland

  Lactose

  done clear
  D)

  Ptyalin

  Pancreas

  Lipid

  done clear
  View Solution play_arrow

• question_answer59)
  Enzyme rennin used in digestion is secreted from:                                        (BCECE 2005)
  A)
  liver                  done clear
  B)
  pancreas done clear
  C)
  intestine                         done clear
  D)
  stomach done clear
  View Solution play_arrow

• question_answer60)
  Which of the following is true about pepsin?
  A)
  Most pepsin is released directly from chief cells done clear
  B)
  Pepsin is essential for protein digestion done clear
  C)
  Pepsin accelerates protein digestion done clear
  D)
  Pepsin is most active at high pH done clear
  View Solution play_arrow

• question_answer61)
  Prorennin is secreted by:                 (DPMT 2007)
  A)
  Sertoli cells                     done clear
  B)
  Hepatocytes done clear
  C)
  Zymogen cells                 done clear
  D)
  Islet of Langerhans done clear
  View Solution play_arrow

• question_answer62)
  In mammals, a significant role in the digestion of milk is played by:                          (CBSE 2000; AFMC 2007)
  A)
  rennin                            done clear
  B)
  invertase done clear
  C)
  intestinal bacteria       done clear
  D)
  pancreatic amylase done clear
  View Solution play_arrow

• question_answer63)
  Rennin is found in:
  A)
  bile                               done clear
  B)
  saliva done clear
  C)
  gastric juice                    done clear
  D)
  pancreatic juice done clear
  View Solution play_arrow

• question_answer64)
  Curdling of milk in stomach occurs by the action of:                                                (AIIMS 2002)
  A)
  rennin                            done clear
  B)
  trypsin done clear
  C)
  erepsin                           done clear
  D)
  chymotrypsin done clear
  View Solution play_arrow

• question_answer65)
  Milk protein is acted upon by a gastric enzyme:
  A)
  casein                            done clear
  B)
  pepsin done clear
  C)
  rennin                            done clear
  D)
  caseinogen done clear
  View Solution play_arrow

• question_answer66)
  Renin acts on milk proteins and converts:                                                               (JIPMER 2002)
  A)
  caseinogen to casein done clear
  B)
  casein into paracasein done clear
  C)
  caseinogen to paracasein done clear
  D)
  paracasein into caseinogen done clear
  View Solution play_arrow

• question_answer67)
  Which is correct pairing of site of action and substrate of rennin?
  A)

  Stomach

  Fat

  done clear
  B)

  Mouth

  Starch

  done clear
  C)

  Stomach

  Casein

  done clear
  D)

  Small intestine

  Protein

  done clear
  View Solution play_arrow

• question_answer68)
  Choose the correct enzyme-substrate pair:
  A)

  Rennin

  Casein

  done clear
  B)

  Maltase

  Lactose

  done clear
  C)

  Amylase

  Protein

  done clear
  D)

  Lipase

  Carbohydrate

  done clear
  View Solution play_arrow

• question_answer69)
  Which one of the following pairs of the kind of cells and their secretion is correctly matched?       (AIIMS 2006)
  A)
  Oxyntic cells\[-\]a secretion with pH between 2.0 and 3.0 done clear
  B)
  Kupffer cells\[-\]a digestive enzyme that hydrolyses nucleic acids done clear
  C)
  Sebaceous glands\[-\]a secretion that evaporates for cooling done clear
  D)
  Alpha cells of Islets of Langerhans\[-\]secretion that decreases blood sugar level done clear
  View Solution play_arrow

• question_answer70)
  Function of HCl in stomach is to:
  A)
  facilitate absorption of food done clear
  B)
  kill microorganisms of food done clear
  C)
  activate trypsinogen to trypsin done clear
  D)
  dissolve enzymes secreted by gastric glands done clear
  View Solution play_arrow

• question_answer71)
  Which is not the function of HCl in stomach?
  A)
  killing the bacteria ingested with food and drinks done clear
  B)
  breaking down proteins into peptones done clear
  C)
  promoting the formation of pepsin done clear
  D)
  softening fibrous food elements done clear
  View Solution play_arrow

• question_answer72)
  Which of these statements about gastric secretion of HCl is false?
  A)
  HCl hydrolyses peptide bonds done clear
  B)
  HCl is secreted by parietal cells done clear
  C)
  HCl is needed for maximum activity of pepsin done clear
  D)
  HCl is needed for the conversion of pepsinogen to pepsin done clear
  View Solution play_arrow

• question_answer73)
  What will happen if the secretion of parietal cells of the gastric glands is blocked with an inhibitor? (CBSE 2008)
  A)
  Gastric Juice will be deficient in chymosin done clear
  B)
  Gastric juice will be deficient in pepsinogen done clear
  C)
  In the absence of HCl secretion, inactive pepsinogen is not converted into the active enzyme pepsin done clear
  D)
  Enterokinase will not be released from the duodenal mucosa and so trypsinogen is not converted to trypsin done clear
  View Solution play_arrow

• question_answer74)
  Which of the following inhibits gastric HCl secretion during a meal?
  A)
  Distension of the stomach done clear
  B)
  Distension of the duodenum done clear
  C)
  The sight and smell of the food done clear
  D)
  Presence of peptides in the stomach done clear
  View Solution play_arrow

• question_answer75)
  The food that enters intestine from stomach is called:                                               (AFMC 2009)
  A)
  chyle                             done clear
  B)
  chyme done clear
  C)
  fundus                           done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer76)
  The food having fully undergone mechanical and chemical digestion inside the stomach is called:
  A)
  chyle                             done clear
  B)
  bolus done clear
  C)
  chyme                           done clear
  D)
  amino acid done clear
  View Solution play_arrow

• question_answer77)
  If the chyme of a person who had orally consumed only starch as food is analysed before it enters the duodenum, it will show-the presence of:                                                                                      (Karnataka CET 2002)
  A)
  maltose and glucose done clear
  B)
  dextrin -and maltose done clear
  C)
  starch, dextrin and maltose done clear
  D)
  starch, dextrin and glucose done clear
  View Solution play_arrow

• question_answer78)
  Excessive stimulation of vagus nerve in humans may lead to:                                                (AIIMS 2003)
  A)
  hoarse voice done clear
  B)
  peptic ulcers done clear
  C)
  efficient digestion of proteins done clear
  D)
  irregular contractions of diaphragm done clear
  View Solution play_arrow

• question_answer79)
  Digestive juice lacking enzyme but adding to digestion is:
  A)
  bile                               done clear
  B)
  chyle done clear
  C)
  chyme                           done clear
  D)
  succus entericus done clear
  View Solution play_arrow

• question_answer80)
  Which of the following has the highest pH?                                                                         (AMU 2007)
  A)
  Bile done clear
  B)
  Gastric juice done clear
  C)
  Pancreatic juice done clear
  D)
  Secretions of the intestinal glands done clear
  View Solution play_arrow

• question_answer81)
  Action of bile on fat is:
  A)
  acidic                            done clear
  B)
  hormonal done clear
  C)
  enzymatic                      done clear
  D)
  nonenzymatic done clear
  View Solution play_arrow

• question_answer82)
  Fat digestion is facilitated by:
  A)
  gastric juice                    done clear
  B)
  bile juice done clear
  C)
  pancreatic juice          done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer83)
  The amount of bile released is in proportion to the amount of:           (CPMT 2004; MPPMT 2005)
  A)
  fat in meal             done clear
  B)
  protein in meal done clear
  C)
  carbohydrate in meal    done clear
  D)
  all of these done clear
  View Solution play_arrow

• question_answer84)
  Which term is used for action of bile salts on fat?
  A)
  Hydrolysis                                  done clear
  B)
  Putrefaction done clear
  C)
  Oxidation                      done clear
  D)
  Emulsification done clear
  View Solution play_arrow

• question_answer85)
  Part of bile juice useful in digestion is:                                                                    (CPMT 2007)
  A)
  bile salt                          done clear
  B)
  bile pigment done clear
  C)
  bile matrix                     done clear
  D)
  all of these done clear
  View Solution play_arrow

• question_answer86)
  The first process in the digestion and assimilation of fats is:                                         (BHU 2003)
  A)
  emulsification done clear
  B)
  enzymatic action done clear
  C)
  absorption by lacteals done clear
  D)
  storage in adipose tissue done clear
  View Solution play_arrow

• question_answer87)
  Bile helps in the digestion of fats because:                                                                          (PCS 2004)
  A)
  it emulsifies fats done clear
  B)
  it makes the medium alkaline done clear
  C)
  it activates fat digestion enzymes done clear
  D)
  it degrades fats into fatty acids and glycerol done clear
  View Solution play_arrow

• question_answer88)
  Emulsification of fat by bile occurs in:
  A)
  liver                  done clear
  B)
  pancreas done clear
  C)
  stomach                        done clear
  D)
   duodenum done clear
  View Solution play_arrow

• question_answer89)
  Emulsification of fats is brought about by:                          (CBSE 2001; Manipal 2005; Orissa JEE 2010)
  A)
  HCl                               done clear
  B)
  bile salts done clear
  C)
  bile pigments           done clear
  D)
  pancreatic juice done clear
  View Solution play_arrow

• question_answer90)
  Sodium taurocholate aids in:                                                                                (EAMCET 2000)
  A)
  defecation                      done clear
  B)
  absorption done clear
  C)
  assimilation                    done clear
  D)
  emulsification done clear
  View Solution play_arrow

• question_answer91)
  Bile salts help in:                            (CPMT 2006)
  A)
  digestion of fats done clear
  B)
  excretion of fats done clear
  C)
  absorption of fats done clear
  D)
  both absorption and digestion of fats done clear
  View Solution play_arrow

• question_answer92)
  Secretion of the bile is proportional to the concentration of:                          (MPPMT 2007; Har. PMT 2008)
  A)
  fat                    done clear
  B)
  protein done clear
  C)
  carbohydrate                  done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer93)
  Absence of which of these in bile will make fat digestion difficult?
  A)
  Salts                             done clear
  B)
  Acids done clear
  C)
  Pigments                        done clear
  D)
  Cholesterol done clear
  View Solution play_arrow

• question_answer94)
  Pancreatic juice is released into:
  A)
  ileum                             done clear
  B)
  jejunum done clear
  C)
  stomach                        done clear
  D)
  duodenum done clear
  View Solution play_arrow

• question_answer95)
  Medium of pancreatic juice remains:
  A)
  neutral                           done clear
  B)
  alkaline done clear
  C)
  highly acidic                   done clear
  D)
  slightly acidic done clear
  View Solution play_arrow

• question_answer96)
  Pancreatic juice takes part in digestion of:
  A)
  proteins, fats and carbohydrates done clear
  B)
  proteins and carbohydrates done clear
  C)
  proteins and fats done clear
  D)
  proteins only done clear
  View Solution play_arrow

• question_answer97)

  Proteolytic enzymes present in the pancreatic juice are:	(BHU2007)
  1. pepsin
  2. elastase
  3. salivary amylase
  4. chymotrypsin

  Answer codes:
  A)
  1 and 2 are correct          done clear
  B)
  1 and 3 are correct done clear
  C)
  2 and 4 are correct      done clear
  D)
  1, 2 and 3 are correct done clear
  View Solution play_arrow

• question_answer98)
  Which of the following remain undigested if pancreas is removed?
  A)
  Carbohydrates                done clear
  B)
  Fats done clear
  C)
  Proteins                         done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer99)
  Pancreatic lipase acts upon:
  A)
  glycogen                        done clear
  B)
  triglycerides done clear
  C)
  polypeptides                   done clear
  D)
  disaccharides done clear
  View Solution play_arrow

• question_answer100)
  The enzyme trypsin is found in:                                                     (Kerala PMT 2002; St. Johns MC 2002)
  A)
  mucus                           done clear
  B)
  saliva done clear
  C)
  intestinal juice                 done clear
  D)
  pancreatic juice done clear
  View Solution play_arrow

• question_answer101)
  Chymotrypsin is secreted by:                                                                      (Manipal 2004)
  A)
  mouth                           done clear
  B)
  intestine done clear
  C)
  stomach                        done clear
  D)
  pancreas done clear
  View Solution play_arrow

• question_answer102)
  Carboxy peptidase is an enzyme secreted by:                                                          (Kerala PMT 2004)
  A)
  stomach                        done clear
  B)
  pancreas done clear
  C)
  intestine                         done clear
  D)
  gall bladder done clear
  E)
   salivary gland done clear
  View Solution play_arrow

• question_answer103)
  DNase and RNase are the enzymes secreted by:                                                      (BHU 2003)
  A)
  pancreas                        done clear
  B)
  stomach done clear
  C)
  intestine                         done clear
  D)
  mouth glands done clear
  View Solution play_arrow

• question_answer104)
  The digestive enzyme that is not found in human pancreatic juice is:                 (Kerala PMT 2006)
  A)
  lipase                            done clear
  B)
  trypsin done clear
  C)
  amylase                         done clear
  D)
  nuclease done clear
  E)
   nucleotidase done clear
  View Solution play_arrow

• question_answer105)
  Food bolus after passing through alkaline medium is:                           (Orissa JEE 2006)
  A)
  chyle                             done clear
  B)
  chyme done clear
  C)
  fat body                        done clear
  D)
  chylomicron done clear
  View Solution play_arrow

• question_answer106)
  Trypsin differs from pepsin in that:
  A)
  it digests proteins in alkaline medium and not in acidic medium done clear
  B)
  it digests proteins in acidic medium and not in alkaline medium done clear
  C)
  both [a] and [b] done clear
  D)
  none of the above done clear
  View Solution play_arrow

• question_answer107)
  Trypsin helps in digestion of proteins in:
  A)
  stomach in acidic medium done clear
  B)
  duodenum in acidic medium done clear
  C)
  stomach in alkaline medium done clear
  D)
  duodenum in alkaline medium done clear
  View Solution play_arrow

• question_answer108)
  Trypsin changes:
  A)
  fats into fatty acids done clear
  B)
  proteins into peptones done clear
  C)
  maltose into its components done clear
  D)
  starch and glycogen into maltose done clear
  View Solution play_arrow

• question_answer109)
  Chymotrypsin acts upon:
  A)
  starch in duodenum done clear
  B)
  proteins in stomach done clear
  C)
  proteins in duodenum in acidic medium done clear
  D)
  proteins in duodenum in alkaline medium done clear
  View Solution play_arrow

• question_answer110)
  In the absence of enterokinase, the digestion of........... would be affected in our intestine.       (Karnataka CET 2009)
  A)
  starch                            done clear
  B)
  albumin done clear
  C)
  maltose                         done clear
  D)
  aminoacid done clear
  View Solution play_arrow

• question_answer111)
  Trypsinogen is changed to trypsin by:                                            (PCS 2004; Kerala PMT 2008)
  A)
  gastrin                           done clear
  B)
  enterogastrone done clear
  C)
  enterokinase            done clear
  D)
  secretin done clear
  View Solution play_arrow

• question_answer112)
  Enterokinase stimulates:                                                                           (BCECE 2007; AMU 2007)
  A)
  pepsin                           done clear
  B)
  trypsin done clear
  C)
  pepsinogen                     done clear
  D)
  trypsinogen done clear
  View Solution play_arrow

• question_answer113)
  Enterokinase helps in the conversion of:
  A)
  caseinogen to casein done clear
  B)
  pepsinogen to pepsin done clear
  C)
  protein to polypeptides done clear
  D)
  trypsinogen into trypsin done clear
  View Solution play_arrow

• question_answer114)
  Just as hydrochloric acid is for pepsinogen, so is the:                                              (MPPMT 2004)
  A)
  bile juice for fat done clear
  B)
  glucagon for glycogen done clear
  C)
  haemoglobin for oxygen done clear
  D)
  enterokinase for trypsinogen done clear
  View Solution play_arrow

• question_answer115)
  Which of these statements about trypsin is true?
  A)
  Trypsin is produced by the crypts of Lieberkuhn done clear
  B)
  Active trypsin is secreted into the pancreatic acini done clear
  C)
  Trypsinogen is converted to trypsin by enterokinase done clear
  D)
  Trypsin is derived from trypsinogen by the digestive action of pepsin done clear
  View Solution play_arrow

• question_answer116)
  Which of the following processes will be affected by the absence of enterokinase?            (Gujarat CET 2007)
  A)
  Amylose \[\to \] Maltose done clear
  B)
  Proteoses \[\to \] Dipeptide done clear
  C)
  Dipeptides \[\to \] Amino acid done clear
  D)
  Lipid \[\to \] Fatty acid + glycerol done clear
  View Solution play_arrow

• question_answer117)
  During the process of digestion, the raw starch present in the diet is digested by:       (PCS 2000)
  A)
  salivary amylase only done clear
  B)
  pancreatic amylase only done clear
  C)
  both the salivary and pancreatic amylases done clear
  D)
  not digested at all done clear
  View Solution play_arrow

• question_answer118)
  Amylopsin acts upon:                        (BHU 2007)
  A)
  polypeptides done clear
  B)
  polysaccharide in any medium done clear
  C)
  polysaccharide in acidic medium done clear
  D)
  polysaccharide in alkaline medium done clear
  View Solution play_arrow

• question_answer119)
  Which of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product?                                                                                                            (CBSE 2008)
  A)
  \[Stomach:\text{ }Fats\xrightarrow{Lipase}Micelles\] done clear
  B)
  \[Duodenum:\text{ }Triglycerides~\xrightarrow{Tryp\sin }\]\[Monoglycerides\] done clear
  C)
  \[Small\,\,intestine:\,\,Starch\xrightarrow{\alpha -amylase}\]\[Disaccharide\text{ }\left( Maltose \right)\] done clear
  D)
  (d)\[Small\text{ }intestine:\text{ }Proteins\text{ }\xrightarrow{Pep\sin }\text{ }Amino\,\,\]\[acids\] done clear
  View Solution play_arrow

• question_answer120)
  The digestion of starch by amylase is completed in the:                                   (Kerala PMT 2003)
  A)
  mouth                           done clear
  B)
  oesophagus done clear
  C)
  stomach                        done clear
  D)
  duodenum done clear
  E)
   ileum done clear
  View Solution play_arrow

• question_answer121)
  The enzyme invertase hydrolyses:
  A)
  starch to sucrose             done clear
  B)
  glucose to sucrose done clear
  C)
  cellulose to starch done clear
  D)
  sucrose to glucose and fructose done clear
  View Solution play_arrow

• question_answer122)
  Enzyme maltase in human gut acts on food at a pH of:
  A)
  less than seven to change starch into maltose done clear
  B)
  more than seven to change starch into maltose done clear
  C)
  less than seven to change maltose into glucose done clear
  D)
  more than seven to change maltose into glucose done clear
  View Solution play_arrow

• question_answer123)
  Maltase converts:                                                                        (Orissa JEE 2005; Pb. PMT 2007)
  A)
  maltose to glucose at pH greater than 7.0 done clear
  B)
  maltose to glucose at pH lesser than 7.0 done clear
  C)
  starch to maltose at higher pH than 7.0 done clear
  D)
  maltose to alcohol done clear
  View Solution play_arrow

• question_answer124)
  Which of these is not an enzyme?
  A)
  Urease                           done clear
  B)
  Sucrase done clear
  C)
  Maltose                         done clear
  D)
  Amylase done clear
  View Solution play_arrow

• question_answer125)
  Lactase is found in:                                                                                 (MPPMT 2000)
  A)
  bile                               done clear
  B)
  saliva done clear
  C)
  intestinal juice                 done clear
  D)
  pancreatic juice done clear
  View Solution play_arrow

• question_answer126)
  Lactose is hydrolysed into:                                                                                               (COMEDK's 2007)
  A)
  fructose only                  done clear
  B)
  glucose only done clear
  C)
  glucose + fructose           done clear
  D)
  glucose + galactose done clear
  View Solution play_arrow

• question_answer127)
  The following is a scheme showing the fate of carbohydrates during digestion in the human alimentary canal. Identify the enzymes acting at stages indicated as A, B, C and D. Choose the correct option from those given:  (Karnataka CET 2006)
  A)
  A = amylase, B = maltase, C = lactase, D = invertase done clear
  B)
  A = amylase, B = maltase, C = invertase, D = lactase done clear
  C)
  A = amylase, B = invertase, C = maltase, D = lactase done clear
  D)
  A = amylase, B = lactase, C = maltase, D = invertase done clear
  View Solution play_arrow

• question_answer128)
  Fat is hydrolysed by enzyme lipase to yield:                                                                        (PCS 2005)
  A)
  glycerine and water done clear
  B)
  glycerol and fatty acids done clear
  C)
  glycerol and amino acids done clear
  D)
  fatty acids and amino acids done clear
  View Solution play_arrow

• question_answer129)
  The enzyme which hydrolyses triglycerides to fatty acids and glycerol is called:                          (CBSE 2004)
  A)
  lipase                            done clear
  B)
  pepsin done clear
  C)
  maltase                         done clear
  D)
  zymase done clear
  View Solution play_arrow

• question_answer130)
  Succus entericus is:                                                                                                          (JCECE 2008)
  A)
  intestinal juice done clear
  B)
  any swelling in gut done clear
  C)
  vermiform appendix done clear
  D)
  swollen area between ileum and rectum done clear
  View Solution play_arrow

• question_answer131)
  Succus entericus is secreted by:                                                                             (Karnataka CET 2007)
  A)
  Crypts of Lieberkuhn    done clear
  B)
  Brunner's gland done clear
  C)
  Both [a] and [b]        done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer132)
  The pH of succus entericus is:
  A)
  7.6                                done clear
  B)
  6.6 done clear
  C)
  5.6                                done clear
  D)
  2.0 done clear
  View Solution play_arrow

• question_answer133)
  Which one is not found in intestinal juice?
  A)
  HCl                  done clear
  B)
  Water done clear
  C)
  Erepsin                          done clear
  D)
  Maltase done clear
  View Solution play_arrow

• question_answer134)
  What is the function of goblet cells?                                                                                   (MPPMT 2004)
  A)
  Production of HCl      done clear
  B)
  Production of mucin done clear
  C)
  Production of enzyme   done clear
  D)
  Production of hormone done clear
  View Solution play_arrow

• question_answer135)
  In humans, digestion of food is completed in the:                                                                (CPMT 2006)
  A)
  mouth                           done clear
  B)
  stomach done clear
  C)
  small intestine                 done clear
  D)
  large intestine done clear
  View Solution play_arrow

• question_answer136)
  Digestion of protein is completed in:                                                           (CPMT 2007; JCECE 2008)
  A)
  stomach                        done clear
  B)
  duodenum done clear
  C)
  ileum                             done clear
  D)
  duodenum and ileum done clear
  View Solution play_arrow

• question_answer137)
  End products of protein digestion are:                                                                    (Har. PMT 2005)
  A)
  sugars                            done clear
  B)
  glucose done clear
  C)
  amino acids                   done clear
  D)
  nucleotides done clear
  View Solution play_arrow

• question_answer138)
  Most digestion occurs in:
  A)
  mouth                           done clear
  B)
  stomach done clear
  C)
  small intestine                 done clear
  D)
  large intestine done clear
  View Solution play_arrow

• question_answer139)
  Digestion of carbohydrates, proteins and fats is completed in:
  A)
  liver                              done clear
  B)
  stomach done clear
  C)
  small intestine                 done clear
  D)
  large intestine done clear
  View Solution play_arrow

• question_answer140)
  Which is a group of end products of carbohydrate digestion?
  A)
  Sucrose, galactose, maltose done clear
  B)
  Glucose, galactose, fructose done clear
  C)
  Maltose, glucose, galactose done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer141)
  Which of the following processes does not take place when glucose in eaten?                      (JKCMEE 2002)
  A)
  Ingestion                        done clear
  B)
  Digestion done clear
  C)
  Absorption                     done clear
  D)
  Assimilation done clear
  View Solution play_arrow

• question_answer142)
  Which of the following is correct chronological order for the enzyme activity of some enzymes taking part in protein digestion?                                                                                                             (Gujarat CET 2006)
  A)
  Pepsin   \[\to \] Trypsin  \[\to \] Peptidase done clear
  B)
  Pepsin   \[\to \] Peptidase \[\to \] Trypsin done clear
  C)
  Trypsin \[\to \] Pepsin   \[\to \] Peptidase done clear
  D)
  Peptidase \[\to \] Trypsin  \[\to \] Pepsin done clear
  View Solution play_arrow

• question_answer143)
  The end products of fat digestion are:
  A)
  glucose                 done clear
  B)
  alkaloids done clear
  C)
  fatty acids              done clear
  D)
  amino acids done clear
  View Solution play_arrow

• question_answer144)
  A certain person is eating boiled potato. One of the food components in it is:            (CBSE 2000)
  A)
  lactose which is indigestible done clear
  B)
  starch which does not get digested done clear
  C)
  cellulose which is digested by cellulase done clear
  D)
  DNA which gets digested by pancreatic DNase done clear
  View Solution play_arrow

• question_answer145)
  Man cannot digest cellulose, whereas cow and other herbivores can because:
  A)
  they have symbiotic microbes in their alimentary canal which digest cellulose done clear
  B)
  they have enzyme cellulase in their stomach done clear
  C)
  they masticate it well by chewing with teeth done clear
  D)
  none of the above done clear
  View Solution play_arrow

• question_answer146)
  Which group contains biocatalysts?
  A)
  Erepsin, amylase, rennin done clear
  B)
  Rhodopsin, pepsin, steapsin done clear
  C)
  Myosin, oxytocin, adrenaline done clear
  D)
  Glucose, amino acids, fatty acids done clear
  View Solution play_arrow

• question_answer147)
  Some proteolytic enzymes are:                                                                              (Orissa JEE 2010)
  A)
  amylase, lipase and zymase done clear
  B)
  trypsin, erepsin and pepsin done clear
  C)
  amylopsin, steapsin and ptyalin done clear
  D)
  urease, dehydrogenase and zymase done clear
  View Solution play_arrow

• question_answer148)
  Statement common to amylase, rennin and trypsin:
  A)
  These are all proteins done clear
  B)
  These are produced in stomach done clear
  C)
  These act at a pH lower than 7 done clear
  D)
  These are all proteolytic enzymes done clear
  View Solution play_arrow

• question_answer149)
  What is common among amylase, rennin and trypsin?                                               (CPMT 2000)
  A)
  These are all proteins done clear
  B)
  These act at a pH lower than 7 done clear
  C)
  These are produced in stomach done clear
  D)
  These are all proteolytic enzymes done clear
  View Solution play_arrow

• question_answer150)
  Match the following and choose the correct combination from the options given:

  	Column I		Column II
  A.	A Ptyalin	1.	1 Lipids
  B.	B Pepsin	2.	2 Starch
  C.	C Steapsin	3.	3 DMA
  D.	D Nuclease	4.	4 Proteins

  (Kerala PMT 2004)
  A)
  A = 1, B = 3, C = 2, D = 4 done clear
  B)
  A = 1, B = 4, C = 3, D = 2 done clear
  C)
  A = 2, B = 4, C = 1, D = 3 done clear
  D)
  A = 2, B = 3, C = 1, D = 4 done clear
  E)
  A = 4, B = 3, C = 1, D = 2 done clear
  View Solution play_arrow

• question_answer151)
  In which of the following, putrefying bacteria are present?       (BHU 2006; Wardha 2008)
  A)
  Liver                             done clear
  B)
  Colon done clear
  C)
  Stomach                        done clear
  D)
  Intestine done clear
  View Solution play_arrow

• question_answer152)

  Read the statements [A] and [B];
  (A): The human small intestine is the longest portion in the alimentary canal.
  (B): Absorption of digested food requires a very large surface area.
  Identify the correct choice on the two statements:	(Karnataka CET 2005)

  A)
  Statement [A] is correct, [B] is wrong done clear
  B)
  Statement [A] and [B] are both correct done clear
  C)
  Both the statements are wrong done clear
  D)
  Statement [B] is correct, [A] is wrong done clear
  View Solution play_arrow

• question_answer153)
  Nutrients absorbed by the blood capillaries in intestinal villi first go into:
  A)
  aorta done clear
  B)
  hepatic artery done clear
  C)
  posterior vena cava done clear
  D)
  liver through hepatic portal vein done clear
  View Solution play_arrow

• question_answer154)
  Which of the following sugars is absorbed from the small intestine by facilitated diffusion?
  A)
  Glucose                         done clear
  B)
  Sucrose done clear
  C)
  Lactose                         done clear
  D)
  Fructose done clear
  View Solution play_arrow

• question_answer155)
  Glucose and amino acids are absorbed in the intestine by:                         (JIPME R2002)
  A)
  osmosis                done clear
  B)
  active transport done clear
  C)
  passive transport       done clear
  D)
  selective absorption done clear
  View Solution play_arrow

• question_answer156)
  Fats are absorbed after:
  A)
  as such                          done clear
  B)
  digestion done clear
  C)
  hydrolysis                      done clear
  D)
  emulsification done clear
  View Solution play_arrow

• question_answer157)
  The absorption of glycerol, fatty acids and monoglycerides takes place by the:
  A)
  colon done clear
  B)
  wall of the stomach done clear
  C)
  capillaries within the villi done clear
  D)
  lymph vessels within the villi done clear
  View Solution play_arrow

• question_answer158)
  The main function of lacteals in the villi of human small intestine is the absorption of:   (Karnataka CET 2005, 06)
  A)
  glucose and vitamins    done clear
  B)
  fatty acids and glycerol done clear
  C)
  water and mineral salts done clear
  D)
  amino acids and glucose done clear
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• question_answer159)
  Fatty acids and monoglycerides absorbed from mammalian intestine first reach:
  A)
  hepatic vein                   done clear
  B)
  lymph vessels done clear
  C)
  hepatic portal vein done clear
  D)
  anterior mesenteric vein done clear
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• question_answer160)
  Fatty acids and glycerol are first absorbed by:
  A)
  villi                               done clear
  B)
  lacteals done clear
  C)
  blood capillaries              done clear
  D)
  hepatic portal vein done clear
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• question_answer161)
  The fats absorbed from the gut are transported to the blood in the form of:        (Kerala PMT 2001)
  A)
  micelles                         done clear
  B)
  liposomes done clear
  C)
  chylomicrons                  done clear
  D)
  chemomicrons done clear
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• question_answer162)
  Fats absorbed into lacteals as chylomicrons are:                                                                  (AMU 2003)
  A)
  glycerol                          done clear
  B)
  fatty acids done clear
  C)
  triglycerides                    done clear
  D)
  monoglycerides done clear
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• question_answer163)
  Chylomicrons are:
  A)
  undigested proteins done clear
  B)
  undigested carbohydrates done clear
  C)
  fat droplets coated with phospholipids done clear
  D)
  fat droplets coated with glycerol and proteins done clear
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• question_answer164)
  Chylomicrons are concerned with:                                                                                     (CPMT 2006)
  A)
  digestion of fats        done clear
  B)
  absorption of fats done clear
  C)
  digestion of proteins    done clear
  D)
  absorption of proteins done clear
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• question_answer165)
  Micelles increase the absorption of fat by:
  A)
  facilitating absorption into the lacteals done clear
  B)
  metabolizing triglyceride to monoglyceride done clear
  C)
  keeping the insoluble products of fat digestion in small aggregates done clear
  D)
  promoting direct absorption across the intestinal epithelium done clear
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• question_answer166)
  Maximum absorption of water occurs in:                                                                            (JEPMER 2006)
  A)
  colon                             done clear
  B)
  rectum done clear
  C)
  small intestine                 done clear
  D)
  large intestine done clear
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• question_answer167)
  Which of the following is the primary absorptive process in the large intestine?
  A)
  Active secretion of chloride from the blood done clear
  B)
  Active absorption of bicarbonate into the blood done clear
  C)
  Active transport of sodium from the lumen to the blood done clear
  D)
  Active transport of potassium from the lumen to the blood done clear
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• question_answer168)
  Absorption of salt and water is the principal function of which region of GI tract?
  A)
  Jejunum                        done clear
  B)
  Stomach done clear
  C)
  Duodenum                     done clear
  D)
  Large intestine done clear
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• question_answer169)
  Yellow colour of faeces is due to:                                                                          (Orissa JEE 2006)
  A)
  bile secretion done clear
  B)
  green colour of bile juice done clear
  C)
  excessive diet of turmeric done clear
  D)
  degradation product of haemoglobin done clear
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• question_answer170)
  The normal brown-red colour of faeces is due to the presence of:
  A)
  bilirubin                  done clear
  B)
  biliverdin done clear
  C)
  stercobilin               done clear
  D)
  urobilinogen done clear
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• question_answer171)
  Stool of a person contains whitish grey colour due to malfunction of which of the following organs?   (CBSE 2002)
  A)
  Liver                             done clear
  B)
  Spleen done clear
  C)
  Kidney                           done clear
  D)
  Pancreas done clear
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