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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Statement I: | The respiratory pathway is better regarded as an amphibolic pathway rather than only a catabolic pathway. |
Statement II: | The respiratory pathway is involved in both anabolism and catabolism. |
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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I: | If fatty acids were to be respired, they would enter the respiratory pathway as acetyl CoA. |
II: | Glycerol enters the respiratory pathway after being converted to PGAL. |
III: | Amino acids enter the respiratory pathway at some stage within the Krebs cycle but never as pyruvate or acetyl CoA. |
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1. | 0.7 | 2. | 0.9 |
3. | 1.0 | 4. | 4.0 |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
1. | 0.7 | 2. | 0.9 |
3. | 1.0 | 4. | 4.0 |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
I: | It shows hydrolysis of sucrose, a disaccharide, into two monosaccharides, a glucose and a fructose molecule. |
II: | The enzyme that is capable of catalysing this reaction is invertase. |
1. | Only I | 2. | Only II |
3. | Both I and II | 4. | Neither I nor II |
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 |
I: | Oxidative decarboxylation steps are Step 4 and Step 5. |
II: | The reducing power 'NADH' is generated at Step 4, Step 5 and Step 9. |
III: | FADH2 is generated at Step 7. |
1. | Only I and II | 2. | Only I and III |
3. | Only II and III | 4. | I, II and III |
1. | (1) is NADH; 4 is FAD; 6 is fumarate; 8 is oxygen and 10 is ATP |
2. | (2) is NAD+ ; 4 is FADH2; 6 is succinate; 8 is oxygen and 10 is ADP |
3. | (1) is NADH; 4 is Fumarate; 6 is FAD; 8 is water and 10 is ATP |
4. | (2) is NAD+; 3 is succinate; 6 is FAD; 8 is oxygen and 10 is ADP |
A | B | C | |
1. | Complex I | FMN | Fe-S |
2. | Complex I | Fe-S | FMN |
3. | Complex II | FMN | Fe-S |
4. | Complex II | Fe-S | FMN |