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Q. No.
Assertion (A):
Arsenate is the uncoupler of glycolysis.
Reason (R):
Arsenate is an inhibitor of phosphoglycerate mutase.
1.
Both (A) and (R) are true and the reason is the correct explanation of the (A).
2.
Both (A) and (R) are true but the reason is not the correct explanation of the (A).
3.
(A) is true but (R) is false.
4.
Both (A) and (R) are false.
Subtopic: Glycolysis |
Please attempt this question first.
Hints
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
| Assertion (A): | Pyruvate decarboxylation or pyruvate oxidation links glycolysis and the Krebs cycle. |
| Reason (R): | Krebs cycle occurs in the mitochondria. |
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: Glycolysis | Kreb's Cycle |
74%
| Assertion(A): | The carbons lost as \(CO_2\) in the Krebs cycle come directly from acetyl CoA. |
| Reason(R): | These carbons are lost always and cannot be put to any use. |
| 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: Kreb's Cycle |
| Assertion(A): | Ubiquinone is the only member of the electron transport chain that is not a protein. |
| Reason(R): | It is individually mobile within the membrane rather than residing in a particular complex |
| 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: ETS |
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
| Assertion (A): | If oxygen is available, it is invariably used as the terminal electron acceptor in aerobic cellular respiration. |
| Reason (R): | It acts as the terminal electron as well as proton acceptor. |
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: ETS |
| Assertion(A): | Electron transport chains are redox reactions that transfer electrons from an electron donor to an electron acceptor. |
| Reason(R): | The transfer of electrons is coupled to the translocation of protons across a membrane, producing a proton gradient. |
| 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: ETS |
59%
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
| Assertion (A): | ATP: NADH + H+ and ATP: FADH2 ratios during the oxidative phosphorylation appear to be not 3 and 2, but 2.5 and 1.5 respectively. |
| Reason (R): | ATP synthase produces 1 ATP/3H+. |
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: Oxidative Phosphorylation |
| Assertion(A): | Cyanide poisoning is a form of histotoxic hypoxia. |
| Reason(R): | Cyanide binds to iron of cytochrome c oxidase and thus prevents binding of oxygen to hemoglobin. |
| 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: Electron Transport Inhibitors |
Consider the given two statements:
| Assertion (A): | Homolactic fermentation (producing only lactic acid) is the simplest type of fermentation. |
| Reason (R): | It is one of the only respiration processes to not produce a gas as a byproduct. |
| 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. | (A) is False, (R) is True. |
Subtopic: Fermentation |
Consider the given two statements:
| Assertion (A): | Fermentation is an extension of glycolysis that can generate ATP by substrate level phosphorylation as long as a sufficient supply of NAD+ is available. |
| Reason (R): | NAD+ is an oxidizing agent in involved in glycolysis. |
| 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. | (A) is False, (R) is True. |
Subtopic: Fermentation |
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