all cells arise from other cells

Question 1

what does mitosis produce?

Answer 1

mitosis produces 2 genetically identical daughter cells/diploid cells

Question 2

what happens in interphase?

Answer 2

replication of DNA

replication of organelles

Question 3

1st step of mitosis

Answer 3

prophase
chromosomes condense and become visible as two chromatids joined by a centromere- because DNA has replicated
nuclear envelope breaks down
mitotic spindle forms

Question 4

2nd step of mitosis

Answer 4

metaphase
chromosomes line up on the equator of the cell
mitotic spindle attached to centromere

Question 5

3rd step of mitosis

Answer 5

anaphase

sister chromatids pulled to opposite ends of the cell by spindle fibres by the centromere

Question 6

4th step

Answer 6

Telophase
mitotic spindle disappears
nuclear envelope reforms and chromosomes uncondensed
cytokinesis occurs

Question 7

how is cancer caused?

Answer 7

mutation causes uncontrolled cell division leading to cancer (oncogenes etc)