DNA Transcription

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Enzymes involved?
RNA polymerase
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In what direction does the DNA move?
From 5' to 3'
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What happens during DNA transcription?
a DNA sequence is copied into a complementary RNA sequence
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Which strand is transcribed?
Anti-sense
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What occurs at the Promotor?
Initiation of transcription; where RNA polymerase binds and causes the DNA strands to unravel
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During transcription, what pairs with adenine?
Uracil
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What occurs after the DNA strands have unravelled?
Free nucleoside triphosphates bind to their complementary base on the anti sense strand which has been unravelled.
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What is the role of RNA polymerase?
RNA polymerase synthesises an RNA strand in a 5' - 3' direction until it reaches the terminator
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What occurs at the Terminator?
RNA polymerase and the newly formed RNA strand both detach from the antisense template, and the DNA rewinds
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Does this type of transcription occur in prokaryotes or eukaryotes?
Prokaryotes
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How does the process differ in eukaryotes?
Euakaryotic genes may contain non-coding sequences called introns that need to be removed before mature mRNA is formed
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What is this process of removing introns called?
Splicing
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Other cards in this set

Card 2

Front

In what direction does the DNA move?

Back

From 5' to 3'

Card 3

Front

What happens during DNA transcription?

Back

Preview of the front of card 3

Card 4

Front

Which strand is transcribed?

Back

Preview of the front of card 4

Card 5

Front

What occurs at the Promotor?

Back

Preview of the front of card 5
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