Q.

During replication of DNA, deoxyribonucleoside triphosphates serve dual purposes because

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a

they act as primase and provide energy for polymerization.

b

they act as helicase and a substrates

c

they act as a substrate and help in releasing tension developed in DNA due to unwinding of DNA

d

they act as a substrates and provide energy for polymerisation.

answer is B.

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Detailed Solution

Deoxyribonucleoside triphosphates serve dual purposes. In addition to acting as substrates, they provide energy for polymerisation reaction (the two terminal phosphates in a deoxynucleoside triphosphates are high-energy phosphates, same as in case of ATP).

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During replication of DNA, deoxyribonucleoside triphosphates serve dual purposes because