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 |
1. | Eight molecules of NADH + H+ |
2. | Two molecules of FADH2 |
3. | Two molecules of ATP |
4. | Four molecules of carbon dioxide |
1. Complex I | 2. Complex II |
3. Complex III | 4. Complex IV |
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. |
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 |
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 |
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. |
1. | 0.7 | 2. | 0.9 |
3. | 1.0 | 4. | 4.0 |
1. | 0.7 | 2. | 0.9 |
3. | 1.0 | 4. | 4.0 |