Exam 3 Part 1

Question 1

conventional vs unconventional base pair

Answer 1

conventional- RNA forms base pairs with complementary sequence further along the molecule
unconventional- RNA sometimes can form bonds with non-traditional pair, like G with U

Question 2

transcription does not require

Answer 2

a primer

Question 3

name of RNA translation start point

Answer 3

promoter

Question 4

subunit in prokaryotes that finds the promoter

Answer 4

sigma factor

Question 5

3 phases of transcription cycle

Answer 5

1. initiation
2. elongation
3. termination

Question 6

DNA gets twisted, what relieves the tension

Answer 6

topoisomerase

Question 7

2 parts of prokaryotic termination signals

Answer 7

1. inverted repeat sequence that is GC rich

2. a string of 6-8 A’s on template

Question 8

GC-rich region

Answer 8

creates a hairpin, causing a pause in the polymerase

Question 9

multiple A’s on template

Answer 9

A-U bonds are weak, when polymerase pauses, it separates from DNA