| Assertion (A): | Glycolysis occurs in cytoplasm. |
| Reason (R): | Enzymes of glycolysis are found in cytoplasm. It is common in aerobic/anaerobic respiration. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
| A: | Glycolysis is the first common step of both aerobic as well as anaerobic respiration. |
| R: | 1 molecule of hexose sugar is converted into molecules of pyruvic acid in the absence or presence of oxygen in glycolysis. |
| 1. | If both (A) & (R) are true and the (R) is the correct explanation of the (A), then mark (1). |
| 2. | If both (A) & (R) are true but the (R) is not the correct explanation of the (A), then mark (2). |
| 3. | If (A) is a true statement but the (R) is false, then mark (3). |
| 4. | If both (A) and (R) are false statements, then mark (4). |
| Statement I: | In fermentation, there is a net gain of 12 molecules of ATP for each molecule of glucose degraded to pyruvic acid whereas only 2 molecules of ATP are generated under aerobic conditions. |
| Statement II: | Fermentation accounts for only a partial breakdown of glucose whereas in aerobic respiration it is completely degraded to CO2 and H2O. |
| Statement I: | The first five reactions of glycolytic pathway convert a molecule of glucose into 2 molecules of glyceraldehyde-3-phosphate. |
| Statement II: | The final product of glycolysis is pyruvate in aerobic settings and lactate in anaerobic conditions. |
| Statement I: | In glycolysis, the conversion of 1, 3-bisphosphoglyceric acid to 3-phosphoglyceric acid and conversion of phosphoenolpyruvate to pyruvic acid are energy-yielding processes. |
| Statement II: | In glycolysis, the conversion of fructose-6-phosphate to fructose-1, 6-bisphosphate and conversion of PGAL to 1, 3-bisphosphoglycerate are energy-yielding processes. |
| 1. | Both statement I and statement II are true |
| 2. | Both statement I and statement II are false |
| 3. | statement I is correct but statement II is false |
| 4. | statement I is incorrect but statement II is true |