Cell Division

Question 1

Name 4 things that cell division is important in

Answer 1

Development, Growth, Repair and Maintenance and Asexual Reproduction

Question 2

What happens before a cell divides?

Answer 2

1. Growth, cell doubles in size and duplicate organelles
2. DNA Replication, all chromosomes
3. Segregation, chromosomes are segregated into two complete sets.

Question 3

What happens during Interphase?

Answer 3

G1 = cells double in size
S = a single round of dna replication is completed
G2 = organelles duplicate

Question 4

What happens during mitosis?

Answer 4

Segregation of two sister chromatids to make two sets of identical chromosomes.

Question 5

What is cell apoptosis?

Answer 5

Programmed cell death

Question 6

Explain ‘prophase’

Answer 6

chromatin is condensing and the chromosomes become visible. The nuclear envelope also breaks down.

Question 7

Explain ‘metaphase’

Answer 7

chromosomes line up on the equator

Question 8

Explain ‘anaphase’

Answer 8

sister chromatids segregate to opposite poles of the cell, they are now single chromatid chromosomes