NEET Biology Biomolecules / जैव-अणु Question Bank

done Self Evaluation Test - Biomolecules Total Questions - 81

• question_answer1)
  phospholipids are:
  A)
  Hydrophilic  done clear
  B)
  Amphibolic done clear
  C)
  Hydrophobic     done clear
  D)
  Amphipathic done clear
  View Solution play_arrow

• question_answer2)
  Deionised water is obtained by passing hard water through:
  A)
  Zeolite done clear
  B)
  Cation exchanger done clear
  C)
  Anion exchanger done clear
  D)
  Both cation and anion exchanger done clear
  View Solution play_arrow

• question_answer3)
  Chargaff's rule is applicable to:
  A)
  Single stranded DNA done clear
  B)
  Double stranded DNA done clear
  C)
  Single stranded RNA done clear
  D)
  Single stranded DNA and RNA done clear
  View Solution play_arrow

• question_answer4)
  The ground susbtance of connective tissue is basically composed of:
  A)
  Lipids done clear
  B)
  Phospholipids done clear
  C)
  Monosaccharides done clear
  D)
  Mucopolysaccharides done clear
  View Solution play_arrow

• question_answer5)
  Match the following nutritional vitamin deficiencies in column-I with the causes/ deficiencies in column-II and choose the correct option.

  	Column-I		Column-II
  A.	Kwashiorkar	I.	Iron
  B.	General anaemia	II.	Menadione
  C.	Dermatitis	III.	Protein
  D.	Marasmus	IV.	Pyridoxine
  E.	Bleeding	V.	Biotin

  A)
  A-I; B-V; C-II; D-III; E-IV done clear
  B)
  A-V; B-II; C-III; D.IV; E-I done clear
  C)
  A-V; B-III; C-IV; D-I; E-II done clear
  D)
  A-III; B-IV; C-I; D-V; E-II done clear
  View Solution play_arrow

• question_answer6)
  Identify the graph labelling as per the statements given and choose the correct option.

  (i) Segment representing the energy of activation

  (ii) Segment representing the amount of free energy released by the reaction

  (iii) Transition state

  (iv) Segment would be the same regardless of whether the reaction were uncatalysed or catalysed.

  A)
  (i) - I                       (ii) - III         (iii) - II         (iv) ? IV done clear
  B)
  (i) - I                       (ii) - II          (iii) - III        (iv) ? II done clear
  C)
  (i) - I                       (ii) - III         (iii) - II         (iv) ? IV done clear
  D)
  (i) - I                       (ii) - II          (iii) - IV        (iv) - III done clear
  View Solution play_arrow

• question_answer7)
  Allosteric enzymes have allosteric sites for:
  A)
  Inhibition only done clear
  B)
  Activation only done clear
  C)
  Reduction in activation energy done clear
  D)
  Both activation and inhibition done clear
  View Solution play_arrow

• question_answer8)
  Which of the following compounds listed below is not a monoamine?
  A)
  Histamine       done clear
  B)
  Serotonin done clear
  C)
  Spermine    done clear
  D)
  Dopamine done clear
  View Solution play_arrow

• question_answer9)
  The cellular pool is formed by:
  A)
  inorganic molecules done clear
  B)
  organic molecules done clear
  C)
  all the molecules in dissolved or suspended state done clear
  D)
  water done clear
  View Solution play_arrow

• question_answer10)
  Milk protein is:
  A)
  Lactogen           done clear
  B)
  Myosin done clear
  C)
  Casein    done clear
  D)
  Pepsin done clear
  View Solution play_arrow

• question_answer11)
  Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these:
  A)
  enhance oxidative metabolism. done clear
  B)
  are conjugated proteins. done clear
  C)
  are exclusively synthesised in the body of a living organism. done clear
  D)
  help in regulating metabolism. done clear
  View Solution play_arrow

• question_answer12)
  All the following statements are true with regard to coconut oil, except:
  A)
  it is composed of medium chain triglycerides. done clear
  B)
  it contains mainly saturated fatty acids. done clear
  C)
  it has a higher iodine number than human fat. done clear
  D)
  it contains cholesterol. done clear
  View Solution play_arrow

• question_answer13)
  The base pairs of DNA are correctly shown as:
  A)
  A=T and C=G  done clear
  B)
  A=T and C=G done clear
  C)
  A=T and C=G done clear
  D)
  A=T and C=G done clear
  View Solution play_arrow

• question_answer14)
  Ammonia is very toxic to brain cells. This is immediately trapped in brain by one of the following mechanisms.
  A)
  Glutamine synthetase reaction done clear
  B)
  Glutaminase reaction done clear
  C)
  Urea synthesis cycle done clear
  D)
  Glutamate dehydrogenase reaction done clear
  View Solution play_arrow

• question_answer15)
  Which one of the given graph shows the effect of pH on the velocity of a typical enzymatic reaction (V)?
  A)
          done clear
  B)
         done clear
  C)
          done clear
  D)
         done clear
  View Solution play_arrow

• question_answer16)
  Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it?
  A)
  Adenine, thymine - Purines done clear
  B)
  Thymine, uracil - Pyrimidines done clear
  C)
  Uracil, cytosine   - Pyrimidines done clear
  D)
  Guanine, adenine - Purines done clear
  View Solution play_arrow

• question_answer17)
  Glycogen is stored in:
  A)
  Liver and muscles done clear
  B)
  Liver only done clear
  C)
  Muscles only done clear
  D)
  Pancreas done clear
  View Solution play_arrow

• question_answer18)
  One of the following proteins does not have a quaternary structure.
  A)
  Hemoglobin done clear
  B)
  Myoglobin done clear
  C)
  Lactate dehydrogenase done clear
  D)
  Immunoglobin G done clear
  View Solution play_arrow

• question_answer19)
  Iron porphyrin occurs in:
  A)
  Cytochrome  done clear
  B)
         Phytochrome done clear
  C)
  Anthocyanin     done clear
  D)
         Both [b] and [c] done clear
  View Solution play_arrow

• question_answer20)
  The high energy bonds of ATP are present between:
  A)
  C - C                 done clear
  B)
  C - O done clear
  C)
  C - N                 done clear
  D)
  O - P done clear
  View Solution play_arrow

• question_answer21)
  Match Column-I with Column-II and select the correct answer using the codes given below.

  	Column-I		Column-II
  A.	Collagen	I.	Glucose transport
  B.	Trypsin	II.	Binding with some chemical like for small taste and hormones
  C.	Trypsin	III.	Homones
  D.	Marasmus	IV.	Enzyme
  E.	Bleeding	V.	Intercellular ground substance
  F.	GLUT-IV VI	VI.	Fight infectious agents

  A)
  A-V; B-IV; C-III; D-VI; E-II; F-I done clear
  B)
  A-II; B-III; C-IV; D-V; E-VI; F-I done clear
  C)
  A-VI; B-II; C-I; D-V; E-VI; F-III done clear
  D)
  A-I; B-IV; C-III; D-VI; E-II; F-V done clear
  View Solution play_arrow

• question_answer22)
  Which of the following is incorrectly matched?
  A)
  Ribozyme - Proteinaceous in nature done clear
  B)
  Apoenzyme - The protein part of enzyme done clear
  C)
  Co-enzyme - Loosely attached organic co-factor of holoenzyme done clear
  D)
  Co-factors - Non-protein part of holoenzyme done clear
  View Solution play_arrow

• question_answer23)
  Denaturation of DNA is accompanied by the following changes except:
  A)
  Increase in viscosity done clear
  B)
  Hyperchromicity done clear
  C)
  Unstacking of bases done clear
  D)
  Destabilisation of DNA helix done clear
  View Solution play_arrow

• question_answer24)
  All the following radio nuclei are used in the study of DNA except:
  A)
  \[^{14}C\]                    done clear
  B)
         \[^{32}P\] done clear
  C)
  \[^{15}N\]                    done clear
  D)
         \[^{51}Cr\] done clear
  View Solution play_arrow

• question_answer25)
  The adjoining graph shows change in cone. Of substrate on enzyme activity. Identify 1, 2 and 3.
  A)
                           1 - \[Ki\]         2 - \[{{K}_{m}}\]           3 - \[{{V}_{\max }}\] done clear
  B)
  1 - \[\frac{{{V}_{\max }}}{2}\]            2 - \[{{K}_{m}}\]         3 - \[Ki\] done clear
  C)
  1 - \[{{V}_{\max }}\]        2 - \[{{K}_{m}}\]    3 - \[\frac{{{V}_{\max }}}{2}\] done clear
  D)
  1 - \[{{K}_{m}}\]              2 - \[{{V}_{\max }}\]           3 - \[\frac{{{V}_{\max }}}{2}\] done clear
  View Solution play_arrow

• question_answer26)
  If base order in one chain of DNA is "ATCGA" then how many no. of H-bond found in DNA duplex?
  A)
  20                     done clear
  B)
  12    done clear
  C)
  10                     done clear
  D)
         11 done clear
  View Solution play_arrow

• question_answer27)
  Raffinose is a:
  A)
  Trisaccharide done clear
  B)
  Disaccharide done clear
  C)
  Polysaccharide done clear
  D)
  Monosaccharide done clear
  View Solution play_arrow

• question_answer28)
  Sugar and amino acids are:
  A)
  Primary metabolites done clear
  B)
  Secondary metabolites done clear
  C)
  Feed stock done clear
  D)
  Inoculum done clear
  View Solution play_arrow

• question_answer29)
  Long chain molecules of fatty acids are formed by:
  A)
  polymerisation of 2-carbon compounds done clear
  B)
  decomposition of fats done clear
  C)
  polymerisation of glycogen done clear
  D)
  conversion of glycogen done clear
  View Solution play_arrow

• question_answer30)
  Keratin is:
  A)
  Tripeptide done clear
  B)
  Chromoprotein done clear
  C)
  Fibrous protein done clear
  D)
  Conjugate protein done clear
  View Solution play_arrow

• question_answer31)
  Match the column-I (Component) with column-II (% of the total cellular mass) and identify the correct options.

  	Column-I (Component)		Column-II (% of the total cellular mass)
  A.	Water	I.	3
  B.	Proteins	II.	70-90
  C.	Carbohydrates	III.	2
  D.	Lipids	IV.	5-7
  E.	Nucleic acids	V.	10-15

  A)
  A-V; B-II; C-III; D-IV; E-I done clear
  B)
  A-II; B-V; C-I; D-III; E-IV done clear
  C)
  A-III; B-I; C-IV; D-V; E-II done clear
  D)
  A-V; B-IV; C-III; D-II; E-I done clear
  View Solution play_arrow

• question_answer32)
  Identify the following molecule.
  A)
  Phospholipid     done clear
  B)
  Lecithin done clear
  C)
  Cholesterol     done clear
  D)
  Oleic acid done clear
  View Solution play_arrow

• question_answer33)
  Study the given statements and select the option.

  (i) Nitrogen bases are open chain hydrocarbons.

  (ii) A nucleoside differ from nucleotide in not having phosphate.

  (iii) One turn of B-DNA has ten base pairs.

  (iv) Length of one turn of DNA is 3.4 A.

  A)
  (i) and (ii) are correct. done clear
  B)
  (i) and (iv) are correct. done clear
  C)
  (ii) and (iii) are incorrect. done clear
  D)
  (i) and (iv) are incorrect. done clear
  View Solution play_arrow

• question_answer34)
  According to Watson and Crick how many base pairs are there in each turn of the helix of DNA?
  A)
  10   done clear
  B)
  11    done clear
  C)
  12                                 done clear
  D)
  13 done clear
  View Solution play_arrow

• question_answer35)
  Phospholipid can be neutralised by:
  A)
  Glycerol         done clear
  B)
  Fatty acids done clear
  C)
  Choline       done clear
  D)
  Aspartic acid done clear
  View Solution play_arrow

• question_answer36)
  Which of the following is a non-reducing sugar?
  A)
  Maltose          done clear
  B)
         Trehalose done clear
  C)
  Lactose          done clear
  D)
         Isomaltose done clear
  View Solution play_arrow

• question_answer37)
  Thymine is:
  A)
  5-Methyl uracil done clear
  B)
  4-Methyl uracil done clear
  C)
  3-Methyl uracil done clear
  D)
  1-Methyl uracil done clear
  View Solution play_arrow

• question_answer38)
  Sucrose is made up of glucose and fructose, which are reducing sugars; but sucrose is a non- reducing sugar, because the linkage involves:
  A)
  1st carbon of glucose and 2nd carbon of fructose done clear
  B)
  2nd carbon of glucose and 1st carbon of fructose done clear
  C)
  1st carbon of glucose and 4th carbon of fructose done clear
  D)
  4th carbon of glucose and 1st carbon of fructose done clear
  View Solution play_arrow

• question_answer39)
  Which statement is correct for biomolecules?
  A)
  DNA is a polymer of ribonucleotides. done clear
  B)
  All carbohydrates breakdown into glucose. done clear
  C)
  Sequence ofamino acids determines primary protein structure. done clear
  D)
  RNA is single stranded and contains different purine bases other than in DNA. done clear
  View Solution play_arrow

• question_answer40)
  Ligase enzyme is used for:
  A)
  Denaturation of DNA done clear
  B)
  Splitting DNA into small bits done clear
  C)
  Joining bits of DNA done clear
  D)
  Digestion of lipids done clear
  View Solution play_arrow

• question_answer41)
  Which of the following is an essential fatty acid?
  A)
  Linoleic acid done clear
  B)
  Linolenic acid done clear
  C)
  Arachidonic acid done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer42)
  Which of the following disccharide gives two molecules of glucose on hydrolysis?
  A)
  Maltose done clear
  B)
  Lactose done clear
  C)
  Both [a] and [b] done clear
  D)
  Sucrose done clear
  View Solution play_arrow

• question_answer43)
  In protoplasm, the amount of organic compounds, in decreasing order, are:
  A)
  Protein, Lipid, Carbohydrate, Nucleic acid done clear
  B)
  Water, Protein, Lipid, Nucleic acid done clear
  C)
  Carbohydrate, Protein, Lipid, Nucleic acid done clear
  D)
  Protein, Carbohydrate, Nucleic acid, Lipid done clear
  View Solution play_arrow

• question_answer44)
  Phospholipids are important cell membrane constituents, because they:
  A)
  contain glycerol done clear
  B)
  can form bilayers in water done clear
  C)
  combine covalently with protein done clear
  D)
  contain polar and non-polar portions done clear
  View Solution play_arrow

• question_answer45)
  In DNA, purine nitrogen bases are:
  A)
  Uracil and Guanine done clear
  B)
  Guanine and Adenine done clear
  C)
  Adenine and cytosine done clear
  D)
  Cytosine and Thymine done clear
  View Solution play_arrow

• question_answer46)
  tRNA attaches amino acid at its:
  A)
  3'end     done clear
  B)
  5'end done clear
  C)
  Loop            done clear
  D)
  Anticodon done clear
  View Solution play_arrow

• question_answer47)
  The most abundant structural polysaccharide is cellulose and the second largest structural polysaccharide is:
  A)
  Chitin done clear
  B)
  Mannose done clear
  C)
  Glycogen done clear
  D)
  Hyaluronic acid done clear
  View Solution play_arrow

• question_answer48)
  What is denoted by 1 and 2 in the given graph?              
  A)
                    1 - Activation energy with enzyme             2 - Activation energy without enzyme done clear
  B)
  1 - Activation energy without enzyme                    2 - Activation energy with enzyme done clear
  C)
  1 - Substrate concentration with enzyme    2 - Substrate concentration without enzyme done clear
  D)
  1 - Substrate concentration without enzyme            2 - Substrate concentration with enzyme done clear
  View Solution play_arrow

• question_answer49)
  Allosteric modulation is due to the inhibition action of enzyme by:
  A)
  Competitive inhibition done clear
  B)
  Substrate concentration done clear
  C)
  Products of reaction done clear
  D)
  Enzyme concentration done clear
  View Solution play_arrow

• question_answer50)
  All the following statements are true with regard  to coconut oil, except:
  A)
  it is composed of medium chain triglycerides. done clear
  B)
  it contains mainly saturated fatty acids. done clear
  C)
  has a higher iodine number than human fat. done clear
  D)
  contains cholesterol. done clear
  View Solution play_arrow

• question_answer51)
  The set of three elements included in micronutrients is:
  A)
  Na, Cu, Mg        done clear
  B)
  Fe, Zn, Cu done clear
  C)
  Fe, K, Ca       done clear
  D)
         Mn, Ni, P done clear
  View Solution play_arrow

• question_answer52)
  The structure of linolenic acid can be described
  A)
  16 carbon, one double bond done clear
  B)
  18 carbon, one double bond done clear
  C)
  18 carbon, two double bonds done clear
  D)
  18 carbon, three double bonds done clear
  View Solution play_arrow

• question_answer53)
  Which of the following amino acids will give rise to an inhibitory neurotransmitter?
  A)
  Histidine done clear
  B)
  Glutamic acid done clear
  C)
  Omithine done clear
  D)
  Tyrosine done clear
  View Solution play_arrow

• question_answer54)
  Pectin is:
  A)
  Monosaccharides done clear
  B)
  Homopolysaccharides done clear
  C)
  Mucopolysaccharides done clear
  D)
  Heteropolysaccharides done clear
  View Solution play_arrow

• question_answer55)
  Insulin activates:
  A)
  Lipolysis         done clear
  B)
  Ketogenesis done clear
  C)
  Glycogenolysis   done clear
  D)
  Glycolysis done clear
  View Solution play_arrow

• question_answer56)
  Maltose is composed of:
  A)
  Glucose & Fructose done clear
  B)
  Glucose & Glycogen done clear
  C)
  Two molecules of Glucose done clear
  D)
  Glycogen & Fructose done clear
  View Solution play_arrow

• question_answer57)
  Which of the following is a reducing sugar?
  A)
  Sucrose done clear
  B)
  Galactose done clear
  C)
  Gluconic acid done clear
  D)
  p-methyl galactoside done clear
  View Solution play_arrow

• question_answer58)
  Bond present between two nucleosides of a polynucleotide is:
  A)
  Covalent bond done clear
  B)
  Hydrogen bond done clear
  C)
  Phosphodiester bond done clear
  D)
  High energy phosphate bond done clear
  View Solution play_arrow

• question_answer59)
  Which one of the following vegetable oils has a very low content of PUFA (polyunsaturated fatty acid)?
  A)
  Safflower oil done clear
  B)
  Groundnut oil done clear
  C)
  Coconut oil done clear
  D)
  Mustard oil done clear
  View Solution play_arrow

• question_answer60)
  Which is not a micronutrient?
  A)
  Zn                     done clear
  B)
         Ca   done clear
  C)
  Cu                    done clear
  D)
         Mo done clear
  View Solution play_arrow

• question_answer61)
  Fats in the body are formed when:
  A)
  glycogen is formed from glucose. done clear
  B)
  sugar level becomes stable in blood. done clear
  C)
  extra glycogen storage in liver and muscles is stopped. done clear
  D)
  All of the above done clear
  View Solution play_arrow

• question_answer62)
  Bond between phosphate and sugar in a nucleotide is:
  A)
  H-bond done clear
  B)
  Covalent bond done clear
  C)
  Phosphodiester bond done clear
  D)
  Sulphide bond done clear
  View Solution play_arrow

• question_answer63)
  Which of the following is an amino acid, which is metabolised by the brain?
  A)
  Alanine          done clear
  B)
         Histidine done clear
  C)
  Glycine              done clear
  D)
  Glutamic acid done clear
  View Solution play_arrow

• question_answer64)
  Proteins are conducted in the body in the form of:
  A)
  Amino acids done clear
  B)
  Natural proteins done clear
  C)
  Enzymes done clear
  D)
  Nucleic acids done clear
  View Solution play_arrow

• question_answer65)
  The differences in D and L forms of sugars are based on:
  A)
  spatial arrangement of carbon atom to which the functional group is attached. done clear
  B)
  configuration of H and OH groups around the penultimate carbon. done clear
  C)
  if the plane of polarised light is rotated to left (levo), it is L form; and if shifted to right (dextro), it is D form. done clear
  D)
  special arrangement of H and OH groups at the last carbon atom. done clear
  View Solution play_arrow

• question_answer66)
  Which is not polysaccharide?
  A)
  Sucrose done clear
  B)
  Starch done clear
  C)
  Glycogen done clear
  D)
  Cellulose done clear
  View Solution play_arrow

• question_answer67)
  Which of the following hormone is a derivative of amino acid?
  A)
  Oestrogen done clear
  B)
  Epinephrine done clear
  C)
  Progestrone done clear
  D)
  Prostaglandin done clear
  View Solution play_arrow

• question_answer68)
  Cholesterol is a crucial molecule in animals as:
  A)
  it is necessary for survival. done clear
  B)
  it is the energy source. done clear
  C)
  it is helpful in hydrolysis of glycogen. done clear
  D)
  it is a source of many vertebrate hormones and other steroids. done clear
  View Solution play_arrow

• question_answer69)
  Inulin is a:
  A)
  Lipid                 done clear
  B)
         Protein done clear
  C)
  Polysaccharide   done clear
  D)
         Human insulin done clear
  View Solution play_arrow

• question_answer70)
  Glycolysis cannot occur in the absence of:
  A)
  Ca                    done clear
  B)
  Mg  done clear
  C)
  Mn                    done clear
  D)
  Co done clear
  View Solution play_arrow

• question_answer71)
  Which of the following is not a wax?
  A)
  Tripalmitin done clear
  B)
  Myricyi palmitate done clear
  C)
  Myricyi cerotate done clear
  D)
  Lanolin done clear
  View Solution play_arrow

• question_answer72)
  The number of essential amino acids in a man is:
  A)
  9          done clear
  B)
         8     done clear
  C)
  10                     done clear
  D)
         14 done clear
  View Solution play_arrow

• question_answer73)
  How many pair of nucleotides are present in one helix of \[\beta \]- DNA?
  A)
  10    done clear
  B)
         12    done clear
  C)
  5                      done clear
  D)
         6 done clear
  View Solution play_arrow

• question_answer74)
  All the following are pentoses, except:
  A)
  Arabinose done clear
  B)
  Xylose done clear
  C)
  Xylulose done clear
  D)
  Mannose done clear
  View Solution play_arrow

• question_answer75)
  DNA polymerase enzyme is required for the synthesis of:
  A)
  DNA from DNA done clear
  B)
  DNA from RNA done clear
  C)
  Both [a] and [b] done clear
  D)
  DNA from nucleosides done clear
  View Solution play_arrow

• question_answer76)
  There is no net synthesis of glucose from fatty acids, because of the irreversible nature of the reaction.
  A)
  Pyruvate to oxaloacetate done clear
  B)
  Pyruvate to acetyl CoA done clear
  C)
  Phosphoenol pyruvate to puruvate done clear
  D)
  Oxaloacetate to phosphoenol pyruvate done clear
  View Solution play_arrow

• question_answer77)
  Which of the following is a micronutrient?
  A)
  Copper done clear
  B)
  Calcium done clear
  C)
  Phosphorus done clear
  D)
  Magnesium done clear
  View Solution play_arrow

• question_answer78)
  Pentoses and hexoses are the most commonly:
  A)
  Disaccharides done clear
  B)
  Monosaccharides done clear
  C)
  Oilgosaccharides done clear
  D)
  Polysaccharides done clear
  View Solution play_arrow

• question_answer79)
  Specificity of protein is due to:
  A)
  Types of amino acid done clear
  B)
  Sequence of amino acid done clear
  C)
  Number of amino acid done clear
  D)
  Quantity ofamino acid done clear
  View Solution play_arrow

• question_answer80)
  In an experiment it was found that adenine constitutes 31 % and guanine 19%. The quantity of cytosine in this DNA is likely to be:
  A)
  19%          done clear
  B)
  40% done clear
  C)
  31%                  done clear
  D)
  50% done clear
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• question_answer81)
  Which of the following mineral is essential for the normal excitability of cardiac muscles?
  A)
  Calcium ions done clear
  B)
  Potassium ions done clear
  C)
  Magnesium ions done clear
  D)
  All of these done clear
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