- 1(current)
Q. No.Which of the following combination of factors affects enzyme activity?
A. Salinity & pH
B. Temperature
C. Concentration of substrate
D. Temperature & pH
E. pH
Choose the correct answer from the options given below:
1. A only
2. B only
3. C & D only
4. A & B only
Subtopic: Â Factors Affecting Enzyme Catalysis Reaction |
 86%
From NCERT
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Read the given statements A, B and C and select the correct option.
| (A) | All enzymes are proteinaceous in nature. |
| (B) | Some competitive inhibitors are often used in the control of bacterial pathogens. |
| (C) | Active site of an enzyme is formed by the folding of the backbone of tertiary structure of protein upon itself. |
| 1. | Statements (A) and (B) are correct |
| 2. | Statements (B) and (C) are correct |
| 3. | Statements (A) and (C) are correct |
| 4. | Statements (A), (B) and (C) are correct |
Subtopic: Â Proteins |Â Enzymes |Â Factors Affecting Enzyme Catalysis Reaction |Â Properties of Enzymes |
 62%
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. |
Subtopic: Â Factors Affecting Enzyme Catalysis Reaction |
 50%
From NCERT
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Hints
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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: Â Enzymes |Â Enzyme Catalysis |Â Factors Affecting Enzyme Catalysis Reaction |Â Properties of Enzymes |Â Mechanism of Enzymes |Â Enzyme Introduction |
 79%
From NCERT
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NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital
- 1(current)
Q. No.
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