D2.1 Cell and nuclear division HL

Question 1

What are the phases of the cell cycle?

Answer 1

Interphase (G1, S, G2), mitosis, and cytokinesis

Question 2

What happens during the S phase?

Answer 2

DNA replication

Question 3

What is the significance of the G1 phase?

Answer 3

Cell growth and preparation for DNA synthesis

Question 4

Describe the G2 phase

Answer 4

Cell prepares for mitosis by synthesizing necessary substances

Question 5

Interphase

Answer 5

The phase where the cell grows, replicates its DNA, and prepares for division

Question 6

What regulates the cell cycle?

Answer 6

Cyclins and cyclin-dependent kinases (CDKs)

Question 7

What happens when proto-oncogenes mutate?

Answer 7

They can lead to uncontrolled cell proliferation and tumor formation

Question 8

How do tumor suppressor genes function?

Answer 8

They slow down or prevent cell division

Question 9

What is a benign tumor?

Answer 9

A non-cancerous tumor that grows slowly

Question 10

How is the mitotic index used?

Answer 10

To measure the proportion of dividing cells in a tissue