- 1(current)
Q. No.Which of the following would be correct regarding the comparison of fermentation and aerobic respiration?
| Fermentation | Aerobic respiration | |
| I: | Partial breakdown of glucose | Complete breakdown of glucose |
| II: | Net gain of only two molecules of ATP beginning with one molecule of glucose | Net gain of many more molecules of ATP beginning with one molecule of glucose |
| III: | NADH is oxidised to NAD+ slowly | NADH is oxidised to NAD+ vigorously |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
Subtopic: Fermentation | Aerobic Respiration |
69%
From NCERT
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The maximum concentration of alcohol in beverages that are naturally fermented is about:
| 1. 5 – 8 % | 2. 13 – 15 % |
| 3. 33 – 34 % | 4. 47 – 49 % |
Subtopic: Fermentation |
77%
From NCERT
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Given below is the schematic representation of alcohol fermentation. Study the diagram and select the correct statements that follow:
| I: | Yeasts perform this metabolic conversion when growing in the absence of oxygen. |
| II: | The metabolic conversion of pyruvate into acetaldeyhde is catalysed by the enzyme pyruvate dehydrogenase. |
| III: | The metabolic conversion of acetaldehyde into ethanol is catalysed by the enzyme alcohol dehydrogenase. |
| 1. | I and II | 2. | I and III |
| 3. | II and III | 4. | I, II and III |
Subtopic: Fermentation |
53%
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What is the number of ATP molecules produced when pyruvate is converted to lactate by fermentation?
| 1. 0 | 2. 2 |
| 3. 4 | 4. 38 |
Subtopic: Fermentation |
From NCERT
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Subtopic: Fermentation | Aerobic Respiration |
88%
From NCERT
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Hints
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Consider the given statements:
| Statement I: | In alcohol fermentation in yeast, pyruvic acid decarboxylase and alcohol dehydrogenase convert pyruvic acid to carbon dioxide and ethanol. |
| Statement II: | In lactic acid fermentation, lactate dehydrogenase reduces pyruvic acid to lactic acid and carbon dioxide in muscle cells during exercise. |
| 1. | Both Statement I and Statement II are correct |
| 2. | Both Statement I and Statement II are incorrect |
| 3. | Statement I is correct but Statement II is incorrect |
| 4. | Statement I is incorrect but Statement II is correct |
Subtopic: Fermentation |
56%
From NCERT
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- 1(current)
Q. No.
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