study guide 4.3 Flashcards
(11 cards)
1
Q
how many strands does DNA have?
A
2
2
Q
What bases does RNA have?
A
A,C,G,U
3
Q
What is the main enzyme of transcription?
A
RNA polymerase
4
Q
What is the first stage of transcription, describe it
A
initiation, the RNA binds to the promoter and coding region is copied by RNA polymerase
5
Q
exons
A
present in DNA
6
Q
introns
A
spliced out and not present in DNA
7
Q
alternative mRNA’s can be produced from the same gene
A
true
8
Q
describe the promoter and its job
A
the start site of transcription that signals the transcription factors
9
Q
transcribed DNA
A
template strand
10
Q
untranscribed DNA
A
coding strand
11
Q
what happens during elongation (stage 2)
A
RNA polymerase breaks free from transcription factors
