- 1(current)
Q. No.Which of the following is correct for enzyme catalysed reaction?
| 1. | Substrate is converted into Enzyme |
| 2. | Substrate is consumed in the reaction completely |
| 3. | Substrate is converted to product |
| 4. | Enzyme is converted to product |
During catalytic cycle of an enzyme–
| 1. | Enzyme alter its shape to fit the substrate molecule. |
| 2. | Substrate alter its shape to get fit into the enzyme molecule. |
| 3. | Both enzyme and substrate changes its shape during transition state. |
| 4. | Enzyme and substrate are rigid molecular structure and it never changes its shape. |
Transition state structure of the substrate formed during an enzymatic reaction is
| 1. | transient but stable | 2. | permanent but unstable |
| 3. | transient and unstable | 4. | permanent and stable |
| A. | Enzyme releases products of the reaction and gets free. |
| B. | Substrate induces the enzyme to alter its shape. |
| C. | The substrate binds with the active site of the enzyme. |
| D. | Enzymes-product complex is formed. |
2. \(\mathrm{C} \rightarrow \mathrm{B} \rightarrow \mathrm{D} \rightarrow \mathrm{A}\)
3. \(\mathrm B \rightarrow \mathrm C \rightarrow \mathrm D \rightarrow \mathrm A\)
4. \(\mathrm D \rightarrow \mathrm C \rightarrow \mathrm A \rightarrow \mathrm B\)
The steps in catalytic cycle of an enzyme action are given in random order
I. The enzyme releases the products. Now enzyme is free to bind another substrate
II. The active sites, now in close proximity of substrate break the bond of substrate and E – P complex forms
III. Binding of substrate induces the enzyme to alter its shape fitting more tightly around the substrate
IV. The substrate binds to the active site of enzyme (i.e., fitting into the active site.
The correct order is
1. I, II, III, IV
2. IV, III, II, I
3. I, III, II, IV
4. I, II, IV, III
| A. | Substrate enzyme complex formation. |
| B. | Free enzyme ready to bind with another substrate. |
| C. | Release of products. |
| D. | Chemical bonds of the substrate broken. |
| E. | Substrate binding to active site. |
1. A, E, B, D, C
2. B, A, C, D, E
3. E, D, C, B, A
4. E, A, D, C, B
- 1(current)
Q. No.
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