The activator of alcohol dehydrogenase enzyme is:
1.
Zinc
2.
Magnesium
3.
Manganese
4.
Molybdenum
Subtopic: Â Enzyme Cofactors |
 71%
Level 2: 60%+
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Consider the two statements:
| Assertion (A): | Iodine-KI reagent can be used to detect starch in a sample. |
| Reason (R): | Starch can hold iodine molecules in its helical portion and starch-iodine is blue in colour. |
| 1. | Both (A) and (R) are True but (R) does not correctly explain(A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are False. |
| 4. | Both (A) and (R) are True and (R) correctly explains (A). |
Subtopic: Â Carbohydrates: Starch & Glycogen |
 76%
Level 2: 60%+
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In the absence of an enzyme, the catalysed reaction:
| 1. | does not take place |
| 2. | takes place at a very slow rate |
| 3. | takes place at a higher rate |
| 4. | is not affected at all |
Subtopic: Â Enzymes |Â Enzyme Catalysis |
 84%
Level 1: 80%+
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Subtopic: Â Nucleic Acid |Â The DNA |
 83%
Level 1: 80%+
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Subtopic: Â Proteins |
 72%
Level 2: 60%+
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Prosthetic groups are distinguished from other cofactors in that they are:
1. tightly bound to the apoenzyme
2. inorganic compounds
3. metal ions
4. vitamins
1. tightly bound to the apoenzyme
2. inorganic compounds
3. metal ions
4. vitamins
Subtopic: Â Enzyme Cofactors |
 91%
Level 1: 80%+
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Consider the given two statements:
| Assertion (A): | Lipids come under acid insoluble fraction of the cell. |
| Reason (R): | Acid insoluble fraction is the macromolecular fraction and lipids are macromolecules. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True and (R) correctly explains (A) |
| 3. | Both (A) and (R) are True and but (R) does not correctly explain (A) |
| 4. | (A) is False but (R) is True |
Subtopic: Â Introduction |
 75%
Level 2: 60%+
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Concanavalin A is:
| 1. | a primary metabolite in living organism and an alkaloid |
| 2. | a primary metabolite in living organism and a lectin |
| 3. | a secondary metabolite in living organism and a lectin |
| 4. | a secondary metabolite in living organism and an alkaloid |
Subtopic: Â Primary & Secondary Metabolites |
 87%
Level 1: 80%+
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Cellulose does not form blue colour with iodine because
| 1. | It breaks down when iodine reacts with it. |
| 2. | It is a disaccharide. |
| 3. | It is a helical molecule. |
| 4. | It does not contain complex helices and hence cannot hold iodine molecules. |
Subtopic: Â Carbohydrates: Cellulose, Chitin, Inulin & Agar |
 86%
Level 1: 80%+
NEET - 2023
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Malonate inhibits the growth of pathogenic bacteria by inhibiting the activity of:
1. Dinitrogenase
2. Succinic dehydrogenase
3. Amylase
4. Lipase
1. Dinitrogenase
2. Succinic dehydrogenase
3. Amylase
4. Lipase
Subtopic: Â Enzyme Inhibition |
 89%
Level 1: 80%+
NEET - 2023
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