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Q. No.Consider the given two statements:
Assertion (A):
The effect of competitive inhibition can be overcome by increasing
the substrate of the enzyme.
Reason (R):
The presence of a competitive inhibitor can decrease the rate of
enzyme-catalyzed reaction by blocking the substrate from binding to the enzyme.
1.
Both (A) and (R) are True and (R) correctly explains (A)
2.
Both (A) and (R) are True but (R) does not correctly explain (A)
3.
(A) is True but (R) is False
4.
(A) is False but (R) is True
the substrate of the enzyme.
enzyme-catalyzed reaction by blocking the substrate from binding to the enzyme.
Subtopic: Enzyme Inhibition: Introduction | Enzyme Inhibition |
Level 3: 35%-60%
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Which of the following describes the substrate concentration at which an enzyme-catalyzed reaction achieves half Vmax?
| 1. | Km value | 2. | Kcat value |
| 3. | pKa value | 4. | Q10 |
Subtopic: Factors Affecting Enzyme Catalysis Reaction |
95%
Level 1: 80%+
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Consider the given two statements
| Assertion (A): | In the absence of carbonic anhydrase, carbon dioxide will not react with water to produce carbonic acid. |
| Reason (R): | Enzymes are the cause for the reactions to take place. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True, (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Enzymes |
68%
Level 2: 60%+
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Chitin:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | is a long-chain polymer of N-acetylglucosamine. |
| II: | is a primary component of cell walls in fungi. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Carbohydrates: Cellulose, Chitin, Inulin & Agar |
94%
Level 1: 80%+
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Consider the given two statements:
1. Only I is true.
2. Only II is true.
3. Both I and II are true.
4. Neither I nor II are true.
| I: | All enzymes are proteins. |
| II: | All proteins are enzymes. |
2. Only II is true.
3. Both I and II are true.
4. Neither I nor II are true.
Subtopic: Enzymes |
56%
Level 3: 35%-60%
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Which of the following best describes the role of secondary metabolites in plants?
| 1. | They are primarily involved in growth and development. |
| 2. | They are essential for the plant's primary metabolic processes. |
| 3. | They play a key role in the plant's defense mechanisms. |
| 4. | They are directly involved in photosynthesis. |
Subtopic: Primary & Secondary Metabolites |
81%
Level 1: 80%+
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Which of the following is not a component of a nucleotide?
1. Phosphate group
2. Ribose sugar
3. Fatty acid
4. Nitrogenous base
1. Phosphate group
2. Ribose sugar
3. Fatty acid
4. Nitrogenous base
Subtopic: Nucleic Acid |
95%
Level 1: 80%+
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Consider the given two statements:
| Assertion (A): | In competitive enzyme inhibition, the inhibitor binds to the active site of the enzyme, preventing the substrate from binding. |
| Reason (R): | Competitive inhibitors structurally resemble the substrate, allowing them to bind reversibly to the active site and reduce the enzyme's activity without affecting the maximal velocity (Vmax) of the reaction. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True and (R) does not correctly explain (A) |
| 3. | (A) is True, (R) is False |
| 4. | (A) is False, (R) is True |
Subtopic: Enzyme Inhibition |
64%
Level 2: 60%+
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Match the polysaccharide with its correct function:
| Column I | Column II | ||
| \(\mathrm{(A)}\) | Starch | \(\mathrm{(I)}\) | Storage of glucose in plants |
| \(\mathrm{(B)}\) | Glycogen | \(\mathrm{(II)}\) | Storage of glucose in animals |
| \(\mathrm{(C)}\) | Cellulose | \(\mathrm{(III)}\) | Structural component of plant cell walls |
| \(\mathrm{(D)}\) | Chitin | \(\mathrm{(IV)}\) | Structural component in fungal cell walls and exoskeletons of insects |
| 1. | \(\mathrm{A\text- II,B\text-I,C\text-IV,D\text-III}\) |
| 2. | \(\mathrm{A\text-III,B\text- I,C\text-II,D\text-IV}\) |
| 3. | \(\mathrm{A\text-I ,B\text-II,C\text-IV,D\text-III}\) |
| 4. | \(\mathrm{A\text- I,B\text-II,C\text-II,D\text-IV}\) |
Subtopic: Carbohydrates: Starch & Glycogen | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
93%
Level 1: 80%+
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At physiological pH, the amino acid exists as a zwitter ion because:
| 1. | It has no net charge. |
| 2. | It has a positive and a negative charge at different parts of the molecule. |
| 3. | It can donate a proton to the surrounding medium. |
| 4. | It can accept a proton from the surrounding medium. |
Subtopic: Zwitter ion & Peptide Bond |
85%
Level 1: 80%+
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