Chapter 9 -2 Flashcards Preview

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Flashcards in Chapter 9 -2 Deck (11):
1

What does RNA polymerase do in the initiation of transcription?

binds to a promoter region in the template DNA
unwinds DNA
Adds complementary RNA bases

2

What signals the start of a gene?

RNA polymerase

3

What does the binding of RNA polymerase require?

transcription proteins

4

What do Eukaryotes have?

pre mRNA modifications

5

What do pre mRNA transcript consists of?

exons and introns

6

What are exons?

expressed info

7

What are introns?

intervening, non coding regions

8

What is the cap and what is the tail?

5' guanine cap
Poly(A) tail at 3' end

9

What does the cap serve as?

recognition sequence for translation machinery

10

What does the tail do?

protects against degradation

11

What deciphers the genetic code?

Translation