| Assertion (A): | With the increase in substrate concentration, the velocity of the enzymatic reaction rises at first but ultimately reaches a maximum velocity which is not exceeded by any further rise in concentration of the substrate. |
| Reason (R): | The enzyme molecules are fewer than the substrate molecules and after saturation of these molecules, there are no free enzyme molecules to bind with the additional substrate molecules. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True but (R) does not explain (A) |
| 3. | (A) is False but (R) is True |
| 4. | Both (A) and (R) are True and (R) correctly explains (A) |