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 |
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Respiratory Complex | Pathway for electron transport | |
1. | NADH dehydrogenase | NADH – FMN – [Fe-S] – Q |
2. | Succinic dehydrogenase | FADH2 – FMN - Q |
3. | Cytochrome bc1 | Cyt b – [Fe-S] – Cyt c1 |
4. | Cytochrome c oxidase | CuA – Cyt a – Cyt a3 – CuB |
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1. | Eight molecules of NADH + H+ |
2. | Two molecules of FADH2 |
3. | Two molecules of ATP |
4. | Four molecules of carbon dioxide |
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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 |
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The net gain of number of ATP molecules during glycolysis will be:
1. 2 | 2. 4 |
3. 6 | 4. 8 |
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Consider the two statements:
Statement I: Inside a cell, the glucose molecule is oxidised not in one step but in several small steps.
Statement II: Some steps will be just large enough such that energy liberated can be coupled to ATP synthesis.
1. Both Statement I and Statement II are correct and Statement II explains Statement I
2. Both Statement I and Statement II are correct but Statement II does not explain Statement I
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct
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1. Only I and II | 2. Only I and III |
3. Only II and III | 4. I, II and III |
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Identify the incorrectly matched pair:
Component of ETC | Name | |
1. | Complex I | NADH dehydrogenase |
2. | Complex II | Succinate dehydrogenase |
3. | Complex III | Cytochrome b6f complex |
4. | Complex IV | Cytochrome c oxidase |
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