prokaryotic gene regulation - content video - intro quiz - Q1

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mcatacct1
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Joined: Sat Oct 26, 2019 4:35 pm

prokaryotic gene regulation - content video - intro quiz - Q1

Post by mcatacct1 » Mon Feb 10, 2020 10:46 pm

What enzyme is unwinding the strands in transcription? Is it RNA Polmerase? I thought helicase unwound the strands. Then RNA Pol would read. My answer was incorrect though. So what, if any, role does helicase play in transcription?
NS_Tutor_Mathias
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Re: prokaryotic gene regulation - content video - intro quiz - Q1

Post by NS_Tutor_Mathias » Tue Feb 11, 2020 5:56 pm

Helicase still unwinds strands in prokaryotic transcription. The question is simply very picky about the order of events (since it is an ordering question) and wants you to realize that RNA Polymerase will bind to a promoter before any unwinding happens.
mcatacct1
Posts: 27
Joined: Sat Oct 26, 2019 4:35 pm

Re: prokaryotic gene regulation - content video - intro quiz - Q1

Post by mcatacct1 » Wed Feb 12, 2020 6:41 pm

Thank you! My mistake, for some reason I thought helicase unwound the strand before RNA Pol landed. This cleared that up. Thanks again!
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