Mitosis

Question 1

What type of cells does mitosis produce?

Answer 1

Daughter cells

Question 2

How many daughter cells does mitosis produce?

Answer 2

2

Question 3

Are the daughter cells genetically identical?

Answer 3

Yes

Question 4

Names the stages of mitosis.

Answer 4

• Prophase
• Metaphase
• Anaphase
• Telephase

Question 5

What are the 3 stages of interphase?

Answer 5

• G1
• S
• G2

G stands for growth
S stands for synthesis

Question 6

What happens during G1?

Answer 6

Organelles duplicate and protein synthesis occurs (translation and transcription)

Question 7

What happesn during S?

Answer 7

Each chromosome replicates to form a pair of identical sister chromotids

Question 8

What happens during G2?

Answer 8

Cells grow

Question 9

Describe what happens during Prophase?

Answer 9

• the pairs of idenetical sister chromotids shortern and thicken (condense) as the DNA supercoils
• the nucleur envolpe breaks down
• The centricle divides and the two new daughter centrioles move to opposite poles of the cell
• Cytoskelton protein threads (TUBULIN) form a spindle between these centrioles

Question 10

Describe what happens during Metaphase.

Answer 10

• The pairs of sister chromotids oreintate themselves at the equator of the cell.
• Using their centromere, each pair attaches to the spindle thread

Question 11

Describe what happens during Anaphase.

Answer 11

• the centromere divides, seperating each pair of chromotids
• the spindles then contracts, whereby the motor proteins walk along the tublin threads and pull one sister chromotif from each pair in opposite directions towards opposite poles

Question 12

Describe what happens during Telephase.

Answer 12

• the chromosones reach opposite poles on the spindle
• the chromosones uncoil and become long and thin
• Nucleur envolpe reform around each group of chromosomes

Question 13

What happens after mitosis?

Answer 13

• once the nucleur envolpes have reformed around the 2 sets of chromosones during telephase, mitosis is complete
• this is immediately followed by the second part of cell divison, known as cytokinesis.
• this is where the plasma membrane folds inward and nips in the cytoplasm
• this causes the cell to split into 2
• these 2 cells are genetically identical

Question 14

Define Cytokinesis

Answer 14

Divison of the cytoplasm and seperation of the cells