- 1(current)
Q. No.Match the following:
| (a) | Inhibitor of catalytic activity of succinate dehydrogenase | (i) | Ricin |
| (b) | Possess peptide bonds | (ii) | Malonate |
| (c) | Cell wall material in fungi | (iii) | Chitin |
| (d) | Secondary metabolite | (iv) | Collagen |
Choose the correct option from the following:
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (i) | (iv) | (ii) |
| 2. | (iii) | (iv) | (i) | (ii) |
| 3. | (ii) | (iii) | (i) | (iv) |
| 4. | (ii) | (iv) | (iii) | (i) |
Subtopic: Â Proteins |Â Enzyme Inhibition |Â Primary & Secondary Metabolites |Â Carbohydrates: Cellulose, Chitin, Inulin & Agar |
 89%
Level 1: 80%+
NEET - 2020
Hints
Links
Given below are two statements:
In the light of the above statements, choose the correct answer from the options given below:
1. Statement I is false but Statement II is true.
2. Both Statement I and Statement II are true.
3. Both Statement I and Statement II are false.
4. Statement I is true but Statement II is false.
| Statement I: | Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat. |
| Statement II: | When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor. |
1. Statement I is false but Statement II is true.
2. Both Statement I and Statement II are true.
3. Both Statement I and Statement II are false.
4. Statement I is true but Statement II is false.
Subtopic: Â Factors Affecting Enzyme Catalysis Reaction |Â Enzyme Inhibition |
 88%
Level 1: 80%+
NEET - 2023
Hints
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 |
 90%
Level 1: 80%+
NEET - 2023
Hints
Consider the given two statements:
| Assertion (A): | Competitive enzyme inhibition can be overcome by increasing the substrate concentration. |
| Reason (R): | Competitive inhibitors bind to a different site on the enzyme, not active site. |
| 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. | (A) is False but (R) is True. |
Subtopic: Â Enzyme Inhibition |
 92%
Level 1: 80%+
Please attempt this question first.
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Inhibition of Succinic dehydrogenase enzyme by malonate is a classical example of:
| 1. | Feedback inhibition |
| 2. | Competitive inhibition |
| 3. | Enzyme activation |
| 4. | Cofactor inhibition |
Subtopic: Â Enzyme Inhibition |
 81%
Level 1: 80%+
NEET - 2024
Hints
The use of sulpha drugs used to slow down the growth of bacterial colonies is based on the principle of:
| 1. | antigen-antibody interaction |
| 2. | competitive inhibition |
| 3. | allosteric feedback inhibition |
| 4. | mutagenesis |
Subtopic: Â Enzyme Inhibition |
 84%
Level 1: 80%+
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- 1(current)
Q. No.
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