cell division

Question 1

name two phases of the cell cycle

Answer 1

interphase

mitotic phase

Question 2

name the stages of interphase

Answer 2

G1- cellular contents, apart from chromosomes are duplicated
S- each of the chromosomes (DNA) are duplicated
G2- the cell continues to grow in size, energy stores are increased and the duplicated DNA is checked for errors

Question 3

what are the stages of the mitotic stage

Answer 3

mitosis

cytokineses

Question 4

what is meant by G0

Answer 4

G0- is the name given to the phase when the cell leaves the cell cycle, either temporarily or permanently

Question 5

what are meant by checkpoints?

Answer 5

checkpoints are the control mechanism of the cell cycle.

Question 6

name each checkpoint that occurs?

Answer 6

G1 checkpoint - occurs at end of G1 phase. it checks for size, nutrients, DNA damage.

G2 checkpoint- checks for cell size, DNA replication, DNA damage.

spindle assembly checkpoint- checks for chromosome attachment to spindle