Chapter 9 -2 Flashcards
1
Q
What does RNA polymerase do in the initiation of transcription?
A
binds to a promoter region in the template DNA
unwinds DNA
Adds complementary RNA bases
2
Q
What signals the start of a gene?
A
RNA polymerase
3
Q
What does the binding of RNA polymerase require?
A
transcription proteins
4
Q
What do Eukaryotes have?
A
pre mRNA modifications
5
Q
What do pre mRNA transcript consists of?
A
exons and introns
6
Q
What are exons?
A
expressed info
7
Q
What are introns?
A
intervening, non coding regions
8
Q
What is the cap and what is the tail?
A
5’ guanine cap
Poly(A) tail at 3’ end
9
Q
What does the cap serve as?
A
recognition sequence for translation machinery
10
Q
What does the tail do?
A
protects against degradation
11
Q
What deciphers the genetic code?
A
Translation
