Ch 3.2 transcription- gene structure Flashcards
1
Q
Gene?
A
- Transcription unit
- sequence dna from which rna transcript can be made
- generally includes: transcription promoter sequence, coding region, terminator sequence
2
Q
Template vs coding strand of dna
A
Template: 3-5 used to make mRNA
Coding: 5-3 the other one
3
Q
3 types of rna
A
mRNA: translated to proteins
tRNA: transfers amino acids
rRNA: ribosome structure
4
Q
RNA
3
A
2’ OH group
U not T
Less stable
5
Q
How stable are each of the RNA’s?
A
rRNA and tRNA relatively stable cuz folded
rRNA interacts with proteins so very stable
mRNA degrades quickly
6
Q
How is transcription initiated?
A
When protein binds to promoter
