Mitosis and The Cell Cycle 3.10

Question 1

What is produced in mitosis

Answer 1

Two genetically identical diploid daughter cells

Question 2

What is mitosis needed for?

Answer 2

For growth, repairing damaged tissues and asexual reproduction

Question 3

Describe the cell cycle

Answer 3

Mitosis and then Interphase (G1, S, G2)

Question 4

What happens in G1, S and G2 during interphase?

Answer 4

G1 = cell grows and new organelles and proteins made
S = DNA replication 
G2 = proteins needed for cell division made

Question 5

Name the 4 stages of mitosis

Answer 5

Prophase
Metaphase
Anaphase
Telophase

Question 6

How does the cell prepare for mitosis during interphase?

Answer 6

• DNA is unraveled and replicated doubling its genetic content
• Organelles are replicated
• ATP content is increased

Question 7

Describe prophase

Answer 7

• Chromosomes condense to get short and fat
• Centrioles move to opposite ends of cell, forming a spindle
• Nuclear envelope breaks down and chromosomes lie free in cytoplasm

Question 8

Describe metaphase

Answer 8

The chromosomes (each with two chromatids) lime along the equator attached to spindle by the centromere

Question 9

Describe anaphase

Answer 9

Centromeres divide separating each pair of sister chromatids
Spindles contract pulling chromatids to opposite poles of the spindle

Question 10

Describe telophase

Answer 10

• Chromatids uncoil and become decondensed
• Nuclear envelope forms around each group of chromosomes to form two nuclei
• Cytoplasm divides = cytokinesis

Question 11

State the mitosis index equation

Answer 11

Mitosis index = number of cells with visible chromosomes/total number of cells