Chapter 16

Question 1

What was Griffith’s experiment?

Answer 1

Mice, transformation

Question 2

What was Hersehy and Chase’s experiment?

Answer 2

Phages to discover DNA for phage

Question 3

What was Chargaff’s experiment?

Answer 3

DNA variation per organism, A=T

Question 4

What was Wilkins and Franklin’s experiment?

Answer 4

X-Ray crystallography to create pictures, structure of DNA

Question 5

What was Watson and Clark’s experiment?

Answer 5

A pairs with T, G with C

Question 6

Purine is ____-ringed, pyrimidine is ____-ringed

Answer 6

double ringed

single ringed

Question 7

What is the correct model of DNA after replication

Answer 7

Semi-conservative

Question 8

What unwinds DNA?

Answer 8

Helicase

Question 9

What does topoisomerase do?

Answer 9

Corrects overwinding ahead of forks

Question 10

How is a new DNA strand started after origin is opened?

Answer 10

Primer creates primase

Question 11

What are the 2 jobs of DNA polymerase?

Answer 11

• Add nucleotides from 3’ end

- Proofread new DNA

Question 12

What joins together Okazaki fragments?

Answer 12

DNA ligase

Question 13

If DNA polymerase misses an error, how is it corrected?

Answer 13

Mismatch repair of DNA

Question 14

If DNA is damaged by an outside source, how is it corrected?

Answer 14

Nucleotide excision repair