Cell Cycle (+ Mitosis)

Question 1

Define Karyotype

Answer 1

Chromosomes in size order
Only visible in mitosis

Question 2

Name the 4 phases of the cell cycle

Answer 2

G1, S, G2, M

Question 3

What make sup the Interphase of the cell cycle?

Answer 3

G1, S, G2

Question 4

G1 phase

Answer 4

Growth

Question 5

S phase

Answer 5

DNA synthesis

Question 6

G2

Answer 6

Second growth

Question 7

M

Answer 7

Mitosis

Question 8

What phase does DNA replication as part of the interphase?

Answer 8

S phase

Question 9

What is the location of S phase? What does it need?

Answer 9

Begins at replication fork
Enzymes

Question 10

Describe the strands of DNA replication

Answer 10

Leading strand
Lagging strand - Okazaki fragments

Question 11

What is the action of Helicase in DNA replication

Answer 11

Splits DNA strand apart

Question 12

What is the action of Primase in DNA replication

Answer 12

Assembles RNA primer

Question 13

What is the action of DNA Polymerase III in DNA replication

Answer 13

Adds bases at 3’ end (reads DNA 3’ to 5’ and makes RNA 5’ to 3’)

Question 14

What is the action of DNA Polymerase I in DNA replication

Answer 14

Removes RNA primer

Question 15

What is the action of DNA Ligase in DNA replication

Answer 15

Binds Okazaki fragments together

Question 16

What is Regulation in DNA replication

Answer 16

Always make equal amounts A + T; G + C