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Q. No.
Assertion (A):
Co-enzymes are inorganic compounds that bind tightly with the apoenzyme to form a holoenzyme.
Reason (R):
Co-enzymes and prosthetic groups are cofactors.
1.
(A) is false but (R) is true.
2.
(A) is true but (R) is false.
3.
Both (A) and (R) are true and (R) is the correct explanation of (A).
4.
Both (A) and (R) are true but (R) is not the correct explanation of (A).
Subtopic: Enzyme Introduction |
69%
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| Assertion (A): | Humans are advised to take a diet rich in proteins. |
| Reason (R): | Essential amino acids cannot be synthesized by the human body. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true and (R) is not the correct explanation of (A). |
| 3. | (A) is true, (R) is false. |
| 4. | (A) is false, (R) is true. |
Subtopic: Proteins |
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Match column I with column II and select the correct option:
1. a(iii), b(i), c(ii), d(iv)
2. a(i), b(iii), c(ii), d(iv)
3. a(i), b(iii), c(iv), d(ii)
4. a(iii), b(i), c(iv), d(ii)
| Column I | Column II | ||
| a. | Down's syndrome | (i) | Bacterial disease |
| b. | Diphtheria | (ii) | Cannot hold I2 |
| c. | Cellulose | (iii) | Congenital disorder |
| d. | Starch | (iv) | Helical secondary structures |
1. a(iii), b(i), c(ii), d(iv)
2. a(i), b(iii), c(ii), d(iv)
3. a(i), b(iii), c(iv), d(ii)
4. a(iii), b(i), c(iv), d(ii)
Subtopic: Carbohydrates |
77%
From NCERT
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Following statements are with reference to ‘lipids’.
Choose the option with correct statements only:
1. (a) and (b)
2. (b) and (e)
3. (c) and (d)
4. (b) and (c)
| (a) | Acetic acid is a precursor of a derived lipid called cholesterol. |
| (b) | Lecithin is a phospholipid found in the cell membrane. |
| (c) | Glycerol is trihydroxy propane, considered an alcohol but not a lipid. |
| (d) | Palmitic acid has 16 carbons excluding carboxyl carbon. |
| (e) | Arachidonic acid is a saturated fatty acid which has 19 carbons excluding carboxyl carbon. |
1. (a) and (b)
2. (b) and (e)
3. (c) and (d)
4. (b) and (c)
Subtopic: Lipids |
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How many of the following statements are correct about lipids?
Select the correct option from the following.
1. Four
2. Three
3. Two
4. One
| a. | Trihydroxy propane is an example of a simple lipid. |
| b. | Fatty acids with one or more C = C double bonds are said to be saturated. |
| c. | Palmitic acid has 16 carbons excluding the carboxyl carbon. |
| d. | Lecithin is an example of a phospholipid. |
1. Four
2. Three
3. Two
4. One
Subtopic: Lipids |
67%
From NCERT
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Match the entries in column I and column II. Which one of the following choices is correct?
1. a-3, b-1, c-4, d-2
2. a-4, b-3, c-1, d-2
3. a-2, b-1, c-3, d-4
4. a-4, b-1, c-3, d-2
| Column I | Column II | ||
| (a) | Haem | 1. | Metallic Cofactor |
| (b) | NAD | 2. | Vitamin |
| (c) | Zinc | 3. | Coenzyme |
| (d) | Niacin | 4. | Prosthetic group |
1. a-3, b-1, c-4, d-2
2. a-4, b-3, c-1, d-2
3. a-2, b-1, c-3, d-4
4. a-4, b-1, c-3, d-2
Subtopic: Enzyme Cofactors |
90%
From NCERT
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Assertion (A): Adenine cannot pair with cytosine.
Reason (R): Adenine specifically forms hydrogen bonds with guanine whereas cytosine forms hydrogen bond with thymine.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Reason (R): Adenine specifically forms hydrogen bonds with guanine whereas cytosine forms hydrogen bond with thymine.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Nucleic Acid | Nucleic Acid: Nucleotides |
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Assertion (A): Co-enzyme is a non-protein group without which certain enzymes are inactive or incomplete.
Reason (R): Coenzymes not only provide a point of attachment of the chemical group being transformed but also influence the properties of the group.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Reason (R): Coenzymes not only provide a point of attachment of the chemical group being transformed but also influence the properties of the group.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Enzyme Cofactors |
63%
From NCERT
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Assertion (A): Competitive inhibitor is also called substrate analogue.
Reason (R): It resembles the enzymes in structure.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Reason (R): It resembles the enzymes in structure.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Factors Affecting Enzyme Catalysis Reaction |
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Assertion (A): Enzymes lower down the activation energy of the reactant molecule to make its transition into product easier.
Reason (R): Enzymes are highly substrate specific catalysts.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Reason (R): Enzymes are highly substrate specific catalysts.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Enzymes | Enzyme Catalysis | Factors Affecting Enzyme Catalysis Reaction | Properties of Enzymes | Mechanism of Enzymes | Enzyme Introduction |
79%
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