Cell Division

Question 1

Summarise the cell cycle

Answer 1

1) growth
2) copied chromosomes
3) separation of chromosomes
4) nucleus divides
5) separation of cells

Question 2

Cell cycle - STEP 1

Answer 2

the cells grows - increases the number of cells organelles

- to allow enough space for duplication

Question 3

Cell cycle - STEP 2

Answer 3

the genetic material (chromosomes) copy/double - so they become X - shaped

Question 4

Cell cycle - STEP 3

Answer 4

PART OF MITOSIS
the chromosomes line up in the centre of the cell and cell fibres pull them apart, the copied chromosomes separate (so their are now two identical sets of 23 pairs of chromosomes)

Question 5

Cell cycle - STEP 4

Answer 5

PART OF MITOSIS
membranes form round the each of the sets of chromosomes forming the nuclei, the nucleus divides into two (that contains the chromosomes)

Question 6

Cell cycle - STEP 5

Answer 6

the cell membrane and cytoplasm then divide to from two identical daughter cells

Question 7

What does the mitosis produce?

Answer 7

two genetically identical daughter cells

Question 8

Summarise binary fission

Answer 8

1) duplication
2) growth
3) division

Question 9

Binary fission - STEP 1

Answer 9

circular DNA and plasmids replicate

Question 10

Binary fission - STEP 2

Answer 10

cells gets bigger and the circular strands of DNA move to opposite ends of the cell

Question 11

Binary fission - STEP 3

Answer 11

cytoplasm begins to divide and new cell wall begins to form, two daughter cells are produced

Question 12

What does binary fission produce?

Answer 12

two daughter cells with an identical copy of the circular DNA but a variable number of plasmid copies