A non-proteinaceous enzyme is:
1. lysozyme
2. ribozyme
3. ligase
4. deoxyribonuclease
1. | They are highly substrate specific |
2. | In thermophilic organisms, enzymes can catalyze reaction at high temperatures, i.e. 90°C |
3. | All enzymes are proteinaceous in nature |
4. | Some enzymes have metal ions |
Assertion (A): | When enzyme catalyzed reactions are observed, the rate would be vastly higher than the same for uncatalyzed reaction |
Reason (R): | Enzymes bring down activation energy barrier making the transition of ‘Substrate’ to ‘Product’ easier. |
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. | (A) is False but (R) is True. |
1. | Enzymes are denatured at high temperatures |
2. | Enzymes are mostly proteins but some are lipids also |
3. | Enzymes are highly specific. |
4. | Enzymes require optimum pH and temperature for maximum activity. |
I: | Almost all enzymes are proteins. |
II: | Some nucleic acids can behave like enzymes. |
III: | No enzyme in living organisms can function above 40 °C. |
IV: | Enzymes are the reason that chemicals react with each other. |
V: | Enzymes are not sensitive to pH in their environment. |