DNA Transcription Flashcards
1
Q
Goal of DNA transcription?
A
complementary RNA from DNA
2
Q
who is the “worker” in transcription?
A
RNA POL
3
Q
characteristics of RNA POL
A
template (clear direction)
focused (5’ to 3’ ONLY; add RNA to 3’ end ONLY)
slow worker: 50 nuc/sec
10x more mistakes than DNA POL
Great starter (no primers)
4
Q
first step of DNA transcription
A
initiation
5
Q
define: transcription initiation
A
RNA POL. binds to promoter sequence (starting sequence)
6
Q
second step transcription
A
elongation
7
Q
define: transcription elongation
A
RNA POL. builds and adds complementary RNA nucleic acids to form RNA strand
8
Q
step three transcription
A
termination
9
Q
define: transcription termination
A
RNA POL stops at termination sequence (end sequence) in DNA & falls off – RNA strand is completed!
