Q. No.In glycolysis, ATP is synthesised:
1.
during conversion of 1,3 biphosphoglyceric acid to 3-phosphoglyceric acid and during conversion of phosphoenolpuruvate to pyruvic acid
2.
during conversion of glucose to glucose-6-phospate and during conversion of fructose-6-phosphate to fructose – 1,6- biphosphate
3.
during conversion of glucose to glucose-6-phospate and during conversion of glucose-6-phosphate to fructose-6- phosphate
4.
during conversion of 3-phosphoglyceric acid to 2-phosphoglycerate and during conversion of 2-phosphoglycerate to phosphoenolpuruvate
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| 1. | during conversion of 1,3 biphosphoglyceric acid to 3-phosphoglyceric acid |
| 2. | during conversion of glyceraldehyde -3-phosphate to 1,3 biphosphoglyceric acid |
| 3. | during conversion of glucose to glucose-6-phospate |
| 4. | during conversion of 3-phosphoglyceric acid to 2-phosphoglycerate |
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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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| 1. | Hydrogen sulphide | 2. | Water |
| 3. | Oxygen | 4. | Pyruvic acid |
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1. Cytosol
2. Mitochondrial matrix
3. Mitochondrial inter-membrane space
4. Inner mitochondrial membrane
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| 1. α-ketoglutarate | 2. Isocitrate |
| 3. Succinyl CoA | 4. Succinic acid |
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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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| 1. Complex I | 2. Complex II |
| 3. Complex III | 4. Complex IV |
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| I: | The F1 headpiece is peripheral membrane protein complex and contains the site for the synthesis of ATP from ADP and inorganic phosphate. |
| II: | The F0 is an integral membrane protein complex that forms the channel through which protons cross the inner membrane. |
| III: | For each ATP produced, 4H+ passes through F0 from the intermembrane space to the matrix down the electrochemical proton gradient. |
2. Only I and II are correct
3. I, II and III are correct
4. I, II and III are incorrect
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