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nbme 2

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nadiabarati

06/13/06 - 09:36 PM

42. During DNA replication, which activity contributes to the fidelity (accuracy) of the DNA polymerase?

A
) DNA ligase

B
) Endonuclease

C
) 3'→5' Exonuclease

D
) 5'→3' Exonuclease

E
) Helicase

robin082006
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06/14/06 - 08:27 AM

C?

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nadiabarati

06/14/06 - 09:24 AM

C I think. because the proof reading activity of DNA polymerase is a 3 to 5 exonuclease one.

sridevibandaru24
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06/14/06 - 04:49 PM

star1
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06/14/06 - 05:07 PM

DNA Polymerase III has 3- 5 exonuclease activity

while DNA Polymerase I has 5 - 3 exonuclease activity

whether Q is imcomplete or Acurracy is relaed to one of these Enzyme.

I will go for 5-e exonuclease Choice D

mjl1717
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06/14/06 - 06:08 PM

my guess would be answer-d, 5'-3' since this is the direction it is synthesized

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