________ is the most abundant protein in animal world and _________ is the most abundant protein in
the whole of the biosphere.
1. Collagen, RuBisCO
2. RuBisCO, Collagen
3. Keratin, Collagen
4. Haemoglobin, RuBisCO
Subtopic: Proteins |
95%
From NCERT
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Prosthetic groups are distinguished from other cofactors in that they:
I: are organic compounds.
II: are tightly bound to the apoenzyme.
1. Only I is true
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
I: are organic compounds.
II: are tightly bound to the apoenzyme.
1. Only I is true
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Enzyme Cofactors |
From NCERT
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Consider the given two statements:
Assertion: Dietary proteins are the source of essential amino acids.
Reason: Amino acids are organic compounds containing an amino group and an acidic group
as substituents on the same carbon.
1. Both Assertion and Reason are true but the Reason does not explain the Assertion.
2. Assertion is true but Reason is False.
3. Both Assertion and Reason are true and Reason correctly explains the Assertion.
4. Assertion is false but Reason is true.
Assertion: Dietary proteins are the source of essential amino acids.
Reason: Amino acids are organic compounds containing an amino group and an acidic group
as substituents on the same carbon.
1. Both Assertion and Reason are true but the Reason does not explain the Assertion.
2. Assertion is true but Reason is False.
3. Both Assertion and Reason are true and Reason correctly explains the Assertion.
4. Assertion is false but Reason is true.
Subtopic: Amino Acids |
81%
From NCERT
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GLUT-4, that enables glucose transport into the cells, is a:
1. protein
2. amino acid
3. lipid
4. ribonucleoprotein
1. protein
2. amino acid
3. lipid
4. ribonucleoprotein
Subtopic: Proteins |
90%
From NCERT
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The number of correct statement(s) from the given statements is/are:
1. 2
2. 3
3. 4
4. 5
| I: | Almost all enzymes are proteins. |
| II: | Some nucleic acids can behave like enzymes. |
| III: | No enzyme in living organisms can function above 40 °C. |
| IV: | Enzymes are the reason that chemicals react with each other. |
| V: | Enzymes are not sensitive to pH in their environment. |
2. 3
3. 4
4. 5
Subtopic: Enzymes | Enzyme Catalysis | Factors Affecting Enzyme Catalysis Reaction |
From NCERT
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Consider the two statements:
1. Statement I is correct; Statement II is incorrect
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | Palmitic acid has 16 carbons including carboxyl carbon. |
| Statement II: | Arachidonic acid has 20 carbon atoms including the carboxyl carbon. |
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Lipids |
92%
From NCERT
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If we represent the chemical composition of living tissue from abundance point of view and arrange them class-wise, the second most abundant chemical in living organisms is:
1. Water
2. Protein
3. Carbohydrate
4. Nucleic acid
1. Water
2. Protein
3. Carbohydrate
4. Nucleic acid
Subtopic: Element Analysis |
77%
From NCERT
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The two strands of polynucleotides in a DNA double helix:
I: are identical.
II: are complementary.
III: are parallel.
IV: are antiparallel.
1. Only I and II are correct
2. Only III and IV are correct
3. Only I and III are correct
4. Only II and IV are correct
I: are identical.
II: are complementary.
III: are parallel.
IV: are antiparallel.
1. Only I and II are correct
2. Only III and IV are correct
3. Only I and III are correct
4. Only II and IV are correct
Subtopic: The DNA |
93%
From NCERT
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Column I | Column II | ||
| A. | Lyases | P. | catalyse removal of groups from substrates by mechanisms other than hydrolysis, leaving double bonds |
| B. | Ligases | Q. | catalyse the linking together of 2 compounds |
| C. | Transferases | R. | catalyse the transfer of a group other than hydrogen between a pair of substrates |
| D. | Isomerases | S. | catalyse inter-conversion of optical, geometric or positional isomers |
Codes:
| A | B | C | D | |
| 1. | P | Q | R | S |
| 2. | Q | P | R | S |
| 3. | P | Q | S | R |
| 4. | R | R | Q | S |
Subtopic: Enzymes Classification |
90%
From NCERT
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Coenzymes nicotinamide adenine dinucleotide (NAD) and NADP contain the vitamin:
1. Riboflavin
2. Pantothenic acid
3. Niacin
4. Pteroylglutamic acid
1. Riboflavin
2. Pantothenic acid
3. Niacin
4. Pteroylglutamic acid
Subtopic: Enzyme Cofactors |
91%
From NCERT
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