Unit 5: Cell Division

Question 1

3 reasons why cells divide

Answer 1

There’s not enough DNA to regulate a large cell
To repair damaged cells
To help bring materials in easier

Question 2

What is the difference between chromosomes and chromatin

Answer 2

Chromosomes are tightly packed DNA while chromatic is loosely packed

Question 3

List the phases of a cell

Answer 3

Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis

Question 4

Interphase

Answer 4

Nucleus is still there
Can’t really see chromosomes

Question 5

Prophase

Answer 5

Chromosomes appear
Nucleus still sort of there, begins to break down my

Question 6

Metaphase

Answer 6

Chromosomes line up in the middle
Nucleus disappears

Question 7

Anaphase

Answer 7

Chromosomes separate from the spindles pulling them

Question 8

Telophase

Answer 8

Chromosomes seem to be on opposite sides, getting ready to form a new cell
Nuclei starts to reform

Question 9

Cytokinesis

Answer 9

Splits the cytoplasm into two cells

Question 10

What is spent during a cells life

Answer 10

90% in the interphase, duplicating DNA and 10% in mitosis

Question 11

How do the chromatids move?

Answer 11

Using the spindles on each side of the cell

Question 12

Explain G1

Answer 12

Organelles are copied after telophase

Question 13

Explain S

Answer 13

Copies chromosomes (46)

Question 14

Explain G2

Answer 14

Double checks for any errors , gets ready for mitosis

Question 15

Explain Hpoptosis

Answer 15

Self destruct button. Releases enzymes if the cell is too mutated

Question 16

Define Anchorage dependence

Answer 16

The cell stops dividing because there’s no attachment

Question 17

Define contact inhibition

Answer 17

The cell stops dividing because it’s too crowded with cells

Question 18

Define telomere

Answer 18

The cell stops dividing because the telomere (at the end of chromosomes) is too short and the cell dies