| Deoxyribonucleoside triphosphate serves dual purposes of |
| I. acting as substrate. |
| II. acting as an enzyme. |
| III. providing energy for polymerisation. |
| IV. increasing the rate of reaction. |
| Choose the correct option. |
A) I and II
B) II and III
C) III and IV
D) I and III
Correct Answer: D
Solution :
[d] The phosphorylated nucleotides are deATP (deoxyadenosine triphosphate), deCTP(deoxycytidine triphosphate), deTTP (deoxythymidine triphosphate). These triphosphates of bases serve dual purposes. They act as substrates as well as provides energy for polymerisation of nucleotides by releasing energy after dissociating the phosphate group. Thus, option [d] is correct.
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