asteinberg6217 asteinberg6217

30-11-2022
Biology

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The DNA helicase animation shows the bacteriophage T7 helicase unwinding DNA. Which of the following are critical components of the helicase mechanism of action necessary to unwind DNA?
A. ATP binding and hydrolysis
C. oscillating loops pulling the single-stranded DNA through a central hole
D. conformational changes of subunits

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abhinavjh321 abhinavjh321

04-12-2022

Option A, What part does the helicase play in DNA replication It splits the two DNA strands by unwinding the double helix. Helicase prepares the DNA strands for replication by reaction separating and untwisting them.

The hydrogen bonds that keep the two strands of double-stranded DNA together are broken by DNA helicases. The single-stranded DNA needed as a template or reaction intermediate in DNA replication, repair, and recombination is created as a result of this energy-intensive unwinding reaction.

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