Cell Division

Question 1

What is the sequence of the cell cycle?

Answer 1

G1, S, G2, M

Question 2

What happens in G1?

Answer 2

The cell grows and organelles increase in number

Question 3

What happens in S phase?

Answer 3

Cell copies it’s DNA

Question 4

What happens in G2?

Answer 4

Cell continues to grow

Question 5

What is the longest step in the cell cycle?

Answer 5

M phase (mitosis)/Intephase

Question 6

What are the four steps in mitosis?

Answer 6

PMAT - Prophase, Metaphase, Anaphase, Telophase

Question 7

What happens during prophase?

Answer 7

1. Centrioles organize spindles
2. Spindles prep to split chromosomes
   * DNA PREPARES to split*

Question 8

What happens during metaphase?

Answer 8

1. Chromosomes line up across the middle of the cell
2. Each attaches to a spindle fiber
   * Chromosomes MEET in the middle*

Question 9

What happens during anaphase?

Answer 9

1. Centromeres split
2. One chromatid is drawn by spindle fiber
3. Other chromatid moves to the opposite side
4. Cell stretches
   * Chromosomes split APART*

Question 10

What happens during telophase?

Answer 10

1. Chromosmomes stretch
2. New nuclear envelope forms around each new bundle of chromosomes
   * There are now TWO cells*

Question 11

When does the cytoplasm divide?

Answer 11

Cytokinesis