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Q. No.Glycerol enters the respiratory catabolic pathway after being converted to:
1. PGAL
2. Fructose
3. Pyruvate
4. Acetyl CoA
Subtopic: THE RESPIRATORY BALANCE SHEET |
71%
From NCERT
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Consider the given two statements:
Statement I: Fatty acids would be broken down to acetyl CoA before entering the respiratory
pathway when it is used as a substrate.
Statement II: When the organism needs to synthesise fatty acids, acetyl CoA would be
withdrawn from the respiratory pathway for it.
1. Statement I is correct; Statement II is incorrect
2. Statement I is incorrect; Statement II is correct
3. Statement I is incorrect; Statement II is incorrect
4. Statement I is correct; Statement II is correct
Statement I: Fatty acids would be broken down to acetyl CoA before entering the respiratory
pathway when it is used as a substrate.
Statement II: When the organism needs to synthesise fatty acids, acetyl CoA would be
withdrawn from the respiratory pathway for it.
1. Statement I is correct; Statement II is incorrect
2. Statement I is incorrect; Statement II is correct
3. Statement I is incorrect; Statement II is incorrect
4. Statement I is correct; Statement II is correct
Subtopic: Amphibolic Nature of Respiration | THE RESPIRATORY BALANCE SHEET |
85%
From NCERT
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Consider the given two statements:
| Assertion (A): | It is better to consider the respiratory pathway as an amphibolic pathway rather than only as a catabolic one. |
| Reason (R): | Breaking down processes within the living organism is catabolism, and synthesis is anabolism. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explains (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: THE RESPIRATORY BALANCE SHEET |
58%
From NCERT
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Consider the given two statements:
| Assertion (A): | When carbohydrates are used as respiratory substrate and are completely oxidised, the RQ will be 1. |
| Reason (R): | Equal amounts of CO2 and O2 are evolved and consumed, when carbohydrates are used as respiratory substrate and are completely oxidised. |
| 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: Respiratory Quotient |
94%
From NCERT
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The number of points in the TCA cycle where FAD+ is reduced to FADH2 is/are:
1. 1
2. 2
3. 3
4. 4
1. 1
2. 2
3. 3
4. 4
Subtopic: Kreb's Cycle |
88%
From NCERT
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In which of the following steps of glycolysis neither ATP is produced nor hydrolyzed?
| 1. | Glucose → glucose‐6‐phosphate |
| 2. | Phosphoenolpyruvate → pyruvate |
| 3. | Fructose‐6‐phosphate → fructose‐1,6‐bisphosphate |
| 4. | Glyceraldehyde-3‐phosphate→1,3-bisphosphoglycerate |
Subtopic: Glycolysis |
64%
From NCERT
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Correct comparisons between fermentation and aerobic respiration will include:
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
| I: | Fermentation accounts for only a partial breakdown of glucose, whereas in aerobic respiration, it is completely degraded to CO2 and H2O. |
| II: | In fermentation, there is a net gain of only two molecules of ATP for each molecule of glucose degraded to pyruvic acid, whereas many more molecules of ATP are generated under aerobic conditions. |
| III: | NADH is oxidised to NAD+ rather slowly in fermentation, however, the reaction is very vigorous in case of aerobic respiration. |
2. Only I and III
3. Only II and III
4. I, II and III
Subtopic: THE RESPIRATORY BALANCE SHEET |
79%
From NCERT
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There can be a net gain of ____ ATP molecules during aerobic respiration of one molecule of glucose
[as per NCERT textbook]:
1. 30
2. 36
3. 38
4. 40
[as per NCERT textbook]:
1. 30
2. 36
3. 38
4. 40
Subtopic: THE RESPIRATORY BALANCE SHEET |
86%
From NCERT
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Consider the given two statements:
| Assertion (A): | It is possible to make calculations of the net gain of ATP for every glucose molecule oxidised; but in reality this can remain only a theoretical exercise. |
| Reason (R): | These calculations can be made only on certain assumptions that are not really valid in a living system. |
| 1. | Both (A) and (R) are True and (R) correctly explains the (A) |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of the (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Aerobic Respiration | THE RESPIRATORY BALANCE SHEET |
88%
From NCERT
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Regarding ATP synthase (complex V):
1. I and II are correct
2. III and IV are correct
3. I and III are correct
4. II and IV are correct
| I: | The F1 headpiece is a peripheral membrane protein complex and contains the site for synthesis of ATP from ADP and inorganic phosphate. |
| II: | F0 is an integral membrane protein complex that forms the channel through which protons cross the inner membrane. |
| III: | The F0 headpiece is a peripheral membrane protein complex and contains the site for synthesis of ATP from ADP and inorganic phosphate. |
| IV: | F1 is an integral membrane protein complex that forms the channel through which protons cross the inner membrane. |
2. III and IV are correct
3. I and III are correct
4. II and IV are correct
Subtopic: ETS |
90%
From NCERT
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