question_answer 1)
Insulin is [CBSE PMT 1991]
A)
An amino acid done
clear
B)
Protein done
clear
C)
A carbohydrate done
clear
D)
A lipid done
clear
View Solution play_arrow
question_answer 2)
Peptides are
A)
Esters done
clear
B)
Salts done
clear
C)
Amides done
clear
D)
Ketones done
clear
View Solution play_arrow
question_answer 3)
The proteins which are insoluble in water are
A)
Fibrous proteins done
clear
B)
Globular proteins done
clear
C)
Both A and B done
clear
D)
None of these done
clear
View Solution play_arrow
question_answer 4)
Irreversible precipitation of proteins is called
A)
Denaturation done
clear
B)
Hydrolysis done
clear
C)
Rearrangement done
clear
D)
Electrophoresis done
clear
View Solution play_arrow
question_answer 5)
The proteins with a prosthetic group are called
A)
Pseudo proteins done
clear
B)
Complex proteins done
clear
C)
Conjugated proteins done
clear
D)
Polypeptides done
clear
View Solution play_arrow
question_answer 6)
The prosthetic group of haemoglobin is
A)
Porphin done
clear
B)
Haem done
clear
C)
Globin done
clear
D)
Globulin done
clear
View Solution play_arrow
question_answer 7)
When collagen is boiled with water, it forms
A)
Precipitate done
clear
B)
Solution done
clear
C)
Gelatin done
clear
D)
Complex collagen done
clear
View Solution play_arrow
question_answer 8)
Which of the following is not essential amino acid
A)
Valine done
clear
B)
Lysine done
clear
C)
Histidine done
clear
D)
Glycine done
clear
View Solution play_arrow
question_answer 9)
Amino acids are
A)
Liquids done
clear
B)
Volatile solids done
clear
C)
Non-volatile crystalline compounds done
clear
D)
Mixture of amines and acids done
clear
View Solution play_arrow
question_answer 10)
Isoelectric point is a
A)
Specific temperature done
clear
B)
Suitable concentration of amino acid done
clear
C)
Hydrogen ion concentration that does not allow migration of amino acid under electric field done
clear
D)
Melting point of an amino acid under the influence of electric field done
clear
View Solution play_arrow
question_answer 11)
Proteins are hydrolysed by enzymes into [CPMT 1981; BHU 1987; MP PMT 1994, 2002]
A)
Dicarboxylic acids done
clear
B)
Hydroxy acids done
clear
C)
Amino acids done
clear
D)
Aromatic acids done
clear
View Solution play_arrow
question_answer 12)
Proteins when heated with conc. \[HN{{O}_{3}}\] give a yellow colour. This is [CPMT 1989]
A)
Oxidising test done
clear
B)
Xanthoprotic test done
clear
C)
Hoppe's test done
clear
D)
Acid-base test done
clear
View Solution play_arrow
question_answer 13)
Enzymes are [DPMT 1980; MP PMT 1993, 96]
A)
Proteins done
clear
B)
Minerals done
clear
C)
Oils done
clear
D)
Fatty acids done
clear
View Solution play_arrow
question_answer 14)
Proteins are built up of [CPMT 1981, 99; BHU 1987; CBSE PMT 2001; MP PMT 1987, 96; KCET 1984]
A)
Dicarboxylic acids done
clear
B)
Amino acids done
clear
C)
Alcohols done
clear
D)
Hydroxy acids done
clear
View Solution play_arrow
question_answer 15)
The main structural feature of proteins is [MNR 1987; MP PET 1993, 97, 2004]
A)
The ester linkage done
clear
B)
The ether linkage done
clear
C)
The peptide linkage done
clear
D)
All of these done
clear
View Solution play_arrow
question_answer 16)
Pepsin enzyme hydrolyses [NCERT 1984; MP PET 1999; MP PMT 2001]
A)
Proteins to amino acids done
clear
B)
Fats to fatty acids done
clear
C)
Glucose to ethyl alcohol done
clear
D)
Polysaccharides to monosaccharides done
clear
View Solution play_arrow
question_answer 17)
Which one of the following proteins transports oxygen in the blood stream [MP PMT 1993]
A)
Myoglobin done
clear
B)
Insulin done
clear
C)
Albumin done
clear
D)
Haemoglobin done
clear
View Solution play_arrow
question_answer 18)
Enzymes are [MP PET 1993]
A)
Living organisms done
clear
B)
Dead organisms done
clear
C)
Complex nitrogenous substances produced in living cells done
clear
D)
None of these done
clear
View Solution play_arrow
question_answer 19)
Which is an essential constituent of diet [AFMC 1980]
A)
Starch done
clear
B)
Glucose done
clear
C)
Carbohydrate done
clear
D)
Protein done
clear
View Solution play_arrow
question_answer 20)
Proteins can be used
A)
As food done
clear
B)
In textile done
clear
C)
As enzyme done
clear
D)
All of these done
clear
View Solution play_arrow
question_answer 21)
Which of the following foodstuffs contains nitrogen [DPMT 1986; MH CET 2002]
A)
Carbohydrates done
clear
B)
Fats done
clear
C)
Proteins done
clear
D)
None of these done
clear
View Solution play_arrow
question_answer 22)
pH in stomach is approximately
A)
7 done
clear
B)
2.0 done
clear
C)
6.5 done
clear
D)
10 done
clear
View Solution play_arrow
question_answer 23)
The helical structure of proteins is established by [CPMT 1988]
A)
Peptide bonds done
clear
B)
Dipeptide bond done
clear
C)
Hydrogen bond done
clear
D)
Vander Waal's forces done
clear
View Solution play_arrow
question_answer 24)
Natural silk is a
A)
Polyester done
clear
B)
Polyamide done
clear
C)
Polyacid done
clear
D)
Polysaccharide done
clear
View Solution play_arrow
question_answer 25)
Protein contains [CPMT 1975; MP PMT 2002]
A)
\[C,\,\,H,\,\,O\] and N done
clear
B)
Only C and H done
clear
C)
\[Cl,\,\,H\] and \[O\] done
clear
D)
All of these done
clear
View Solution play_arrow
question_answer 26)
The end product of protein digestion is [CPMT 1981; KCET 1984]
A)
Amino acid done
clear
B)
Glucose done
clear
C)
Glycerol done
clear
D)
Oxalic acid done
clear
View Solution play_arrow
question_answer 27)
Protein can be most easily removed from [MNR 1988]
A)
Alkanes done
clear
B)
Alkenes done
clear
C)
Alkynes done
clear
D)
Benzene done
clear
View Solution play_arrow
question_answer 28)
Which of the following contains the highest percentage of protein [CPMT 1984]
A)
Groundnut done
clear
B)
Cow's milk done
clear
C)
Egg done
clear
D)
Wheat done
clear
View Solution play_arrow
question_answer 29)
The enzyme ptylin used for the digestion of food is present in [CPMT 1981; Pb. PMT 2004]
A)
Saliva done
clear
B)
Blood done
clear
C)
Intestines done
clear
D)
Adrenal glands done
clear
View Solution play_arrow
question_answer 30)
Which one of the following is an amino acid [KCET 1984]
A)
\[C{{H}_{3}}CON{{H}_{2}}\] done
clear
B)
\[C{{H}_{3}}CONHC{{H}_{3}}\] done
clear
C)
\[C{{H}_{3}}NHCHO\] done
clear
D)
\[N{{H}_{2}}C{{H}_{2}}.COOH\] done
clear
View Solution play_arrow
question_answer 31)
Biuret test is used for the detection of [KCET 1993]
A)
Saturated oils done
clear
B)
Sugars done
clear
C)
Proteins done
clear
D)
Fats done
clear
View Solution play_arrow
question_answer 32)
Out of the following the best category of proteins is [SCRA 1991]
A)
Polyamides done
clear
B)
Polythioethers done
clear
C)
Glycerides done
clear
D)
Polysaccharides done
clear
View Solution play_arrow
question_answer 33)
The molecular weight of protein is [KCET 1984]
A)
< 10000 done
clear
B)
> 10000 done
clear
C)
> 1000 done
clear
D)
> 1000 and < 10000 done
clear
View Solution play_arrow
question_answer 34)
Which of the following is not a classification of proteins [KCET 1984]
A)
Enzymes done
clear
B)
Antibodies done
clear
C)
Antigens done
clear
D)
Hormones done
clear
View Solution play_arrow
question_answer 35)
The protein that is a structural material is [KCET 1984]
A)
Albumin done
clear
B)
Oxytocin done
clear
C)
Haemoglobin done
clear
D)
Keratin done
clear
View Solution play_arrow
question_answer 36)
For \[\alpha -\]amino acids having the structure \[R-\underset{N{{H}_{2}}\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,}{\mathop{CH-}}\,}}\,C{{O}_{2}}H\] Which of the following statements are true Water solubility is maximum at a pH when concentrations of anions and cations are equal They give ninhydrin test On reacting with nitrous acid give off \[{{N}_{2}}\] [MP PET 1994]
A)
All done
clear
B)
B and C done
clear
C)
A and B done
clear
D)
A done
clear
View Solution play_arrow
question_answer 37)
Which of the following reacts with haemoglobin in the blood to form carboxyhaemoglobin [Manipal MEE 1995]
A)
CO done
clear
B)
\[C{{O}_{2}}\] done
clear
C)
HCOOH done
clear
D)
\[{{H}_{2}}C{{O}_{3}}\] done
clear
View Solution play_arrow
question_answer 38)
Secondary structure of a protein refers to [CBSE PMT 1995]
A)
Mainly denatured proteins and structures of prosthetic groups done
clear
B)
Three dimensional structure, specially the bond between amino acid residues that are distant from each other in the polypeptide chain done
clear
C)
Linear sequence of amino acid residues in the polypeptide chain done
clear
D)
Regular folding patterns of continuous portions of the polypeptide chain done
clear
View Solution play_arrow
question_answer 39)
Of the following statements about enzymes which ones are true (i) Enzymes lack in nucleophilic groups (ii) Enzymes are highly specific both in binding chiral substrates and in catalyzing their zeactions (iii) Enzymes catalyse chemical reactions by lowering the activation energy (iv) Pepsin is a proteolytic enzyme [CBSE PMT 1995]
A)
(i) and (iv) done
clear
B)
(i) and (iii) done
clear
C)
(ii), (iii) and (iv) done
clear
D)
(i) done
clear
View Solution play_arrow
question_answer 40)
Proteins are composed of [MP PMT 1995; J & K 2005]
A)
\[\alpha -\]amino acids done
clear
B)
Carbohydrates done
clear
C)
Vitamins done
clear
D)
Mineral salts done
clear
View Solution play_arrow
question_answer 41)
Read the following statements carefully Albumin is a simple protein The amino acid alanine contains an acidic side chain Insulin is a hormone Muscles contain the protein keratin Point out the wrong statements in the above set of statements
A)
A, B done
clear
B)
C, D done
clear
C)
A, C done
clear
D)
B, D done
clear
View Solution play_arrow
question_answer 42)
Enzymes in the living systems [ CPMT 1999; AIIMS 2000; CBSE PMT 1997; MP PET 1999;]
A)
Provide energy done
clear
B)
Provide immunity done
clear
C)
Transport oxygen done
clear
D)
Catalyse biological processes done
clear
View Solution play_arrow
question_answer 43)
Which of the following statements about proteins is not true [MP PET 2001]
A)
Amino acid residues join together to make a protein molecule done
clear
B)
Proteins are polymers with formula \[{{({{C}_{6}}{{H}_{10}}{{O}_{5}})}_{n}}\] done
clear
C)
Eggs are rich in protein done
clear
D)
Pulses are good source of proteins done
clear
View Solution play_arrow
question_answer 44)
Enzymes [AIIMS 1996]
A)
Accelerate biochemical reactions done
clear
B)
Have optimum activity at body temperature done
clear
C)
Consist of amino acids done
clear
D)
Have all these properties done
clear
View Solution play_arrow
question_answer 45)
The functional group which is found in amino acid is [AFMC 1998; AIEEE 2002]
A)
\[-COOH\] group done
clear
B)
\[-N{{H}_{2}}\] group done
clear
C)
\[-C{{H}_{3}}\] group done
clear
D)
Both A and B done
clear
View Solution play_arrow
question_answer 46)
Amino acids are produced on hydrolysis of [AIIMS 1996]
A)
Nucleic acid done
clear
B)
Carbohydrates done
clear
C)
Fats done
clear
D)
Proteins done
clear
View Solution play_arrow
question_answer 47)
Enzymes belong to which class of compounds [KCET 1996]
A)
Polysaccharides done
clear
B)
Polypeptides done
clear
C)
Polynitrogen heterocyclic compounds done
clear
D)
Hydrocarbons done
clear
View Solution play_arrow
question_answer 48)
By the action of enzymes, the rate of biochemical reaction [CBSE PMT 1994]
A)
Decreases done
clear
B)
Increases done
clear
C)
Does not change done
clear
D)
Either A or C done
clear
View Solution play_arrow
question_answer 49)
Metal present in blood is [CPMT 1997]
A)
Al done
clear
B)
Mg done
clear
C)
Cu done
clear
D)
Fe done
clear
View Solution play_arrow
question_answer 50)
Which compound can exist in a dipolar (zwitter ion) state [Pb. PMT 1998]
A)
\[{{C}_{6}}{{H}_{5}}C{{H}_{2}}CH(N=C{{H}_{2}})COOH\] done
clear
B)
\[{{(C{{H}_{3}})}_{2}}CH.CH(N{{H}_{2}})COOH\] done
clear
C)
\[{{C}_{6}}{{H}_{5}}CONHC{{H}_{2}}COOH\] done
clear
D)
\[HOOC.C{{H}_{2}}C{{H}_{2}}COCOOH\] done
clear
View Solution play_arrow
question_answer 51)
What is the monomer of polypeptide [KCET 1998; JIPMER 1999; Pb. CET 2002]
A)
Amino acid done
clear
B)
Glucose done
clear
C)
Nucleoside done
clear
D)
Nucleotide done
clear
View Solution play_arrow
question_answer 52)
Which of the following enzymes is not useful in the digestion of proteins [KCET 1998]
A)
Chymotrypsin done
clear
B)
Pepsin done
clear
C)
Trypsin done
clear
D)
Lipase done
clear
View Solution play_arrow
question_answer 53)
Haemoglobin is [CBSE PMT 1997; BHU 2004]
A)
An enzyme done
clear
B)
A globular protein done
clear
C)
A vitamin done
clear
D)
A carbohydrate done
clear
View Solution play_arrow
question_answer 54)
Albumin proteins are most abundant in [BHU 1998]
A)
Meat done
clear
B)
Milk done
clear
C)
Egg done
clear
D)
Soyabean done
clear
View Solution play_arrow
question_answer 55)
Dialysis can separate [BHU 1998]
A)
Glucose and fructose done
clear
B)
Glucose and sucrose done
clear
C)
Glucose and NaCl done
clear
D)
Glucose and proteins done
clear
View Solution play_arrow
question_answer 56)
Which one of the following is an example of a globular protein [Orissa JEE 1997]
A)
Keratin done
clear
B)
Insulin done
clear
C)
Collagen done
clear
D)
Myoglobin done
clear
View Solution play_arrow
question_answer 57)
Leucine amino acids is the [Pb. PMT 1999]
A)
Essential done
clear
B)
Non-essential done
clear
C)
Aromatic done
clear
D)
Basic done
clear
View Solution play_arrow
question_answer 58)
Which of the following tests is not used for testing proteins [Kerala PMT 1999; KCET 1999]
A)
Millon's test done
clear
B)
Molisch's test done
clear
C)
Biuret test done
clear
D)
Ninhydrin test done
clear
View Solution play_arrow
question_answer 59)
Amino acids usually exist in the form of Zwitter ions. This means that it consists of [KCET 2000]
A)
The basic group \[N{{H}_{2}}\] and the acidic group \[-COOH\] done
clear
B)
The basic group \[-NH_{3}^{+}\] and the acidic group \[-C{{O}_{2}}\] done
clear
C)
The basic group \[-CO_{2}^{-}\] and the acidic group \[NH_{3}^{+}\] done
clear
D)
No acidic or basic group done
clear
View Solution play_arrow
question_answer 60)
The most important energy carrier in all the living cells is [MP PET 2000; KCET 2000]
A)
AMP done
clear
B)
ATP done
clear
C)
ADP done
clear
D)
UDP done
clear
View Solution play_arrow
question_answer 61)
The 10% energy transfer law of food chain was given by [BHU 2000]
A)
Stanley done
clear
B)
Weismann done
clear
C)
Lindemann done
clear
D)
Tansley done
clear
View Solution play_arrow
question_answer 62)
Which of the following is a conjugated protein [BHU 2000]
A)
Glycoprotein done
clear
B)
Phosphoprotein done
clear
C)
Chromoprotein done
clear
D)
All of these done
clear
View Solution play_arrow
question_answer 63)
The number of essential amino acids in man is [CBSE PMT 2000]
A)
8 done
clear
B)
10 done
clear
C)
18 done
clear
D)
20 done
clear
View Solution play_arrow
question_answer 64)
Pick out wrong combination [DCE 2000]
A)
\[F{{e}^{+2}}\to \] Haemoglobin done
clear
B)
\[M{{g}^{2+}}\to \] Photosynthesis done
clear
C)
\[S{{e}^{2+}}\to \] Kreb Cycle done
clear
D)
\[C{{O}^{+2}}\to \] Vitamin B-12 done
clear
View Solution play_arrow
question_answer 65)
The decomposition of complex organic compounds into simpler compound with the help of enzyme is known as [Pb. PMT 2000]
A)
Catabolism done
clear
B)
Anabolism done
clear
C)
Fermentation done
clear
D)
Metabolism done
clear
View Solution play_arrow
question_answer 66)
A biological catalyst is essentially [Pb. PMT 2000; BHU 2004]
A)
A carbohydrates done
clear
B)
An amino acids done
clear
C)
A nitrogen molecule done
clear
D)
Fats done
clear
View Solution play_arrow
question_answer 67)
The test used for identifying peptide linkage in proteins is [KCET (Engg.) 2001]
A)
Borsche's test done
clear
B)
Molisch's test done
clear
C)
Ninhydrin test done
clear
D)
Biuret test done
clear
View Solution play_arrow
question_answer 68)
Which of the following is not a function of proteins [MP PMT 2001]
A)
Nails formation done
clear
B)
Skin formation done
clear
C)
Muscle formation done
clear
D)
Providing energy for metabolism done
clear
View Solution play_arrow
question_answer 69)
The helical structure of proteins is stabilized by [MP PMT 2001]
A)
Peptide bonds done
clear
B)
Dipeptide bond done
clear
C)
Hydrogen bond done
clear
D)
Vander Waal's forces done
clear
View Solution play_arrow
question_answer 70)
The optically inactive amino acid is [MP PMT 2001; BHU 2005]
A)
Lysine done
clear
B)
Glycine done
clear
C)
Arginine done
clear
D)
Alanine done
clear
View Solution play_arrow
question_answer 71)
Which a amino acid can cross link peptide chains [AIIMS 2001]
A)
Serine done
clear
B)
Cysteine done
clear
C)
Glutamine done
clear
D)
Tyrosine done
clear
View Solution play_arrow
question_answer 72)
Amino acids are the building blocks of [MH CET 2001]
A)
Fat done
clear
B)
Vitamin done
clear
C)
Protein done
clear
D)
Carbohydrate done
clear
View Solution play_arrow
question_answer 73)
Which of the following protein destroys the antigen when it enters in body cell [AIIMS 2001; Pb. PMT 2004 ]
A)
Antibodies done
clear
B)
Insulin done
clear
C)
Chromoprotein done
clear
D)
Phosphoprotein done
clear
View Solution play_arrow
question_answer 74)
An antibiotic with a broad spectrum [AFMC 2001]
A)
Kills the antibodies done
clear
B)
Acts on a specific antigen done
clear
C)
Acts on different antigents done
clear
D)
Acts on both the antigens and antibodies done
clear
View Solution play_arrow
question_answer 75)
Antibodies are [CBSE PMT 2001]
A)
Carbohydrate done
clear
B)
Globular protein done
clear
C)
Immunoglobulins done
clear
D)
Cellulose compounds done
clear
View Solution play_arrow
question_answer 76)
Excess of \[N{{a}^{+}}\] ions in our system causes [BHU 2001]
A)
High B.P. done
clear
B)
Low B.P. done
clear
C)
Diabetes done
clear
D)
Anaemia done
clear
View Solution play_arrow
question_answer 77)
The example of a protein is [MP PET 2003]
A)
Narvone done
clear
B)
Lacithin done
clear
C)
Cellulose done
clear
D)
Insulin done
clear
View Solution play_arrow
question_answer 78)
Enzymes are made up of [CBSE PMT 2002]
A)
Carbohydrates done
clear
B)
Edible proteins done
clear
C)
Nitrogen containing carbohydrates done
clear
D)
Proteins with specific structure done
clear
View Solution play_arrow
question_answer 79)
Chlorophyll contains [RPMT 2002]
A)
\[Fe\] done
clear
B)
\[Na\] done
clear
C)
\[Mg\] done
clear
D)
\[Zn\] done
clear
View Solution play_arrow
question_answer 80)
Which one of the following biomolecules is insoluble in water [AIIMS 2005]
A)
a- Keratin done
clear
B)
Haemoglobin done
clear
C)
Ribonuclease done
clear
D)
Adenine done
clear
View Solution play_arrow
question_answer 81)
A nanopeptide contains ??.. peptide linkages [KCET 2005]
A)
10 done
clear
B)
8 done
clear
C)
9 done
clear
D)
18 done
clear
View Solution play_arrow
question_answer 82)
Identify the incorrect statement [Kerala (Med.) 2003]
A)
An octa deca peptide contains 18 amino acid residues and 17 peptide bonds done
clear
B)
Addition of an inert gas into a system in thermodynamic equilibrium for the dissociation of \[PC{{l}_{5}}\] shifts the equilibrium to the left. done
clear
C)
When gold dissolves in aquaregia the complex formed is chloroauric acid done
clear
D)
In the extraction of aluminium purified bauxite is dissolved in molten fluorospar done
clear
E)
If the pH value of a solution is to be decreased from 5 to 3, the hydrogen ion concentration must be increased twice the initial value. done
clear
View Solution play_arrow
question_answer 83)
a-helix is found in [Kerala (Engg.) 2002]
A)
DNA done
clear
B)
RNA done
clear
C)
Lipid done
clear
D)
Protein done
clear
View Solution play_arrow
question_answer 84)
The main structural of protein is [UPSEAT 2000, 02]
A)
The ester linkage done
clear
B)
The ether linkage done
clear
C)
The peptide linkage done
clear
D)
All of these done
clear
View Solution play_arrow
question_answer 85)
Among the following, the achiral amino acid is [AIIMS 2003]
A)
2-Ethylalanine done
clear
B)
2-Methylglycine done
clear
C)
2-Hydroxymethyl serine done
clear
D)
Tryptophan done
clear
View Solution play_arrow
question_answer 86)
Which of the following could act as a propellant or rockets [CBSE PMT 2003]
A)
Liquid hydrogen + liquid nitrogen done
clear
B)
Liquid oxygen + liquid argon done
clear
C)
Liquid hydrogen + liquid oxygen done
clear
D)
Liquid nitrogen +liquid oxygen done
clear
View Solution play_arrow
question_answer 87)
Which amino acid has aromatic ring [CPMT 2003]
A)
Alamine done
clear
B)
Glycine done
clear
C)
Tyrosine done
clear
D)
Lysine done
clear
View Solution play_arrow
question_answer 88)
The pH value of the solution in which a particular amino acid does not migrate under the influence of an electric field in called the [Kerala (Med.) 2003]
A)
Eutectic point done
clear
B)
Yielding point done
clear
C)
Neutralisation point done
clear
D)
Effusion done
clear
E)
Isoelectric point done
clear
View Solution play_arrow
question_answer 89)
Which part of the protein molecule is responsible for function and activity of the proteins [AMU 2002]
A)
Secondary structure done
clear
B)
Peptide bond done
clear
C)
Primary structure done
clear
D)
Binding sites done
clear
View Solution play_arrow
question_answer 90)
The Structural formula of an amino acid, isoleucine is [MP PMT 2003]
A)
\[C{{H}_{3}}-\overset{N{{H}_{2}}\,}{\mathop{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{CH.C}}\,}}\,OOH\] done
clear
B)
C)
D)
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question_answer 91)
The process by which synthesis of protein takes place based on the genetic information present in m-RNA is called [KCET 2003; Kerala CET 2005]
A)
Translation done
clear
B)
Transcription done
clear
C)
Replication done
clear
D)
Messenger hypothesis done
clear
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question_answer 92)
Which of the following is used in our body as a fuel for muscles and nerves and to build and repair body tissues? [DCE 2003]
A)
Cane sugar done
clear
B)
Fructose done
clear
C)
Proteins done
clear
D)
Glucose done
clear
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question_answer 93)
Which enzyme convert glucose into alcohol [Pb. CET 2003]
A)
Invertase done
clear
B)
Zymase done
clear
C)
Maltase done
clear
D)
Diastase done
clear
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question_answer 94)
Which one of the following structures represents the peptide chain [CBSE PMT 2004; CPMT 2003; DCE 2002; MP PET 1994; Bihar MEE 1997; Orissa JEE 1997]
A)
\[-\overset{H}{\mathop{\overset{|}{\mathop{N}}\,}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-\overset{H}{\mathop{\overset{|}{\mathop{N}}\,}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-\overset{H}{\mathop{\overset{|}{\mathop{N}}\,}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-\] done
clear
B)
\[-\overset{H}{\mathop{\overset{|}{\mathop{N}}\,}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-\underset{H}{\mathop{\underset{|}{\mathop{N}}\,}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-\overset{H}{\mathop{\overset{|}{\mathop{N}}\,}}\,-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-\] done
clear
C)
\[-\overset{H}{\mathop{\overset{|}{\mathop{N}}\,}}\,-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-\underset{H}{\mathop{\underset{|}{\mathop{N}}\,}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-NH-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-NH-\] done
clear
D)
\[-\overset{H}{\mathop{\overset{|}{\mathop{N}}\,}}\,-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-\overset{H}{\mathop{\overset{|}{\mathop{N}}\,}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-\underset{|}{\overset{|}{\mathop{C}}}\,-\] done
clear
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question_answer 95)
The correct statement in respect of protein haemoglobin is that it [CBSE PMT 2004]
A)
Acts as an oxygen carrier in the blood done
clear
B)
Forms antibodies and offers resistance to diseases done
clear
C)
Functions as a catalyst for biological reactions done
clear
D)
Maintains blood sugar level done
clear
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question_answer 96)
Identify the correct statement regarding enzymes [AIEEE 2004]
A)
Enzymes are specific biological catalysts that cannot be poisoned done
clear
B)
Enzymes are normally heterogeneous catalysts that are very specific in their action done
clear
C)
Enzymes are specific biological catalysts that can normally function at very high temperature (T ~ 1000K) done
clear
D)
Enzymes are specific biological catalysts that possess well-defined active sites done
clear
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question_answer 97)
A biological catalyst is essentially [BHU 2004]
A)
An enzyme done
clear
B)
A carbohydrate done
clear
C)
An amino acid done
clear
D)
A nitrogen compound done
clear
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question_answer 98)
Which synthesis was done by Stainley Millar [CPMT 1979]
A)
Amino acid done
clear
B)
Protein done
clear
C)
Virus done
clear
D)
Vitamin done
clear
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question_answer 99)
The bond that determines the secondary structure of proteins is or secondary structure of protein is due to [NCERT 1984; MP PET 1996; MP PMT 1997]
A)
Coordinate bond done
clear
B)
Covalent bond done
clear
C)
Hydrogen bond done
clear
D)
Peptide bond done
clear
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