Mitosis

Question 0

Step 1 - interphase

Answer 0

• In between division
• DNA is duplicated eg chromosomes are duplicated
• Chromosomes are not visible

Question 1

Mitosis

Answer 1

Nuclear cell division that results in 2 daughter cells each the same as the parent nucleus

Question 2

Step 2: (early) prophase

Answer 2

• chromosomes condense and can now be seen

- each chromosome is seen to consist of two chromatids

Question 3

Step 2.2 prometaphase (late prophase)

Answer 3

• nuclear membrane breaks down

- spindle fibres are formed

Question 4

Step 3: metaphase

Answer 4

-the chromosomes align on the ‘equator’ of the spindle - the spindle fibres attach to the centromeres

Question 5

Step 4: anaphase

Answer 5

Spindle fibres pull the chromatids apart to opposite ends of the cell (chromatids are now called chromosomes again)

Question 6

Step 5: telophase

Answer 6

A new nuclear membrane forms around each of the two sets of chromosomes

Question 7

Step 6: cytokinesis

Answer 7

• The cells start to divide

- two new genetically identical daughter cells are formed

Question 8

Where does mitosis happen? 3

Answer 8

• in all body cells(except sex cells)
• in bacteria and other microorganisms
• in plants

Question 9

What is the purpose of mitosis? 3

Answer 9

• to make more cells (during growth)
• to replace dead cells (repair)
• asexual reproduction