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Q. No.Regarding RuBisCO:
I:
It is the most abundant protein in the whole of the biosphere.
II:
Mg2+ is its activator
1.
Only I is correct
2.
Only II is correct
3.
Both I and II are correct
4.
Both I and II are incorrect
Subtopic: Proteins |
79%
From NCERT
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The substrate has to go through a higher energy state or transition state during its conversion to a product in:
| I: | Exothermic spontaneous reactions |
| II: | Endothermic reactions |
| III: | Enzyme catalyzed reactions |
| 1. | Only I and II |
| 2. | Only I and III |
| 3. | Only II and III |
| 4. | I, II, and III |
Subtopic: Enzyme Catalysis |
From NCERT
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In the DNA double helix:
| I: | At each step of ascent, the strand turns 34º. |
| II: | The rise per base pair would be 0.36 nm. |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: The DNA |
55%
From NCERT
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Consider the given two statements:
| I: | In competitive enzyme inhibition, the substrate and inhibitor cannot bind to the enzyme at the same time. |
| II: | The inhibitor always has a much higher affinity for the active site than the normal substrate. |
| 1. | Both I and II are correct and II explains I |
| 2. | Both I and II are correct but II does not explain I |
| 3. | I is correct but II is incorrect |
| 4. | I is incorrect but II is correct |
Subtopic: Enzyme Inhibition |
From NCERT
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Consider the following two statements:
| I: | Enzyme catalyzed reactions are affected by the change in the temperature and pH. |
| II: | Change in pH and temperature affects the tertiary structure of proteins. |
| 1. | Both I and II are correct and II explains I |
| 2. | Both I and II are correct but II does not explain I |
| 3. | I is correct but II is incorrect |
| 4. | I is incorrect but II is correct |
Subtopic: Factors Affecting Enzyme Catalysis Reaction |
74%
From NCERT
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Consider the given two statements:
| I: | Lipids come under acid insoluble fraction. |
| II: | Lipids are macromolecules. |
| 1. | Both I and II are correct and II explains I |
| 2. | Both I and II are correct but II does not explain I |
| 3. | I is correct but II is incorrect |
| 4. | I is incorrect but II is correct |
Subtopic: Element Analysis |
59%
From NCERT
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Consider the given two statements:
I. The term ‘carbohydrate’ meaning ‘hydrated carbon’ is a misnomer.
II. In the synthesis of such molecules, a water molecule is simply attached to each carbon atom.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct and II is incorrect
4. Both I and II are incorrect
Subtopic: Carbohydrates |
55%
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | Lipids are macromolecules |
| Reason (R): | They have a molecular weight range of ten thousand Daltons and above. |
| 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: Element Analysis |
From NCERT
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | Dietary proteins are the source of essential amino acids. |
| Reason (R): | All essential amino acids are aromatic. |
| 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: Proteins |
85%
From NCERT
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
| Assertion (A): | Low temperature destroys enzymatic activity. |
| Reason (R): | Proteins are denatured when exposed to low temperatures. |
In the light of the above statements choose the correct answer from the options given below:
| 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 |
70%
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