Biology8.6-8.7Quiz

Question 1

A chromosome is made up of…

Answer 1

two sister chromatids formed during replication

Question 2

The part of the chromosome where the sister chromatids meet is called…

Answer 2

the centromere

Question 3

The protein structure that surrounds the centromere is called?

Answer 3

the kinetochore

Question 4

How do the chromosomes divide?

Answer 4

kinetochore fibers (microtubules) attach to each side of the kinetochore and pull the sister chromatids apart

Question 5

What happens when the sister chromatids do not separate correctly?

Answer 5

aneuploid cells (cells wih the wrong number of chromosomes) are created

Question 6

nuclear membrane breaks down

Answer 6

prophase

Question 7

mitotic spindle form around the nucleus

Answer 7

prophase

Question 8

In animal cells, centrioles move to opposite sides of the cell.

Answer 8

prophase

Question 9

spindle poles attach to the kinetochores that form on the outside of each chromatid

Answer 9

prophase

Question 10

longest phase of mitosis

Answer 10

prophase

Question 11

chromosomes are lined up at the equator of the cell

Answer 11

metaphase

Question 12

What is the ring of chromosomes formed in the center of the cell?

Answer 12

the metaphase plate

Question 13

sister chromatids start to be pulled toward opposite sides of the cell by spindle fibers

Answer 13

anaphase

Question 14

In animal cells, centrioles help the spindle fibers reel in the chromosome.

Answer 14

anaphase

Question 15

What do plant cells use to help pull the chromosomes apart?

Answer 15

part of their cell wall

Question 16

chromosomes uncoil and become chromatin again

Answer 16

telophase

Question 17

spindle fibers break down

Answer 17

telophase

Question 18

2 nuclear membranes form

Answer 18

telophase

Question 19

mitosis is complete

Answer 19

telophase

Question 20

cytokinesis

Answer 20

the process of dividing the cytoplasm in half

Question 21

What happens after cytokinesis?

Answer 21

The daughter cells enter G1, G0, or move through the restriction point.

Question 22

What happens if a cell does not go through cytokinesis?

Answer 22

it winds up with two nuclei

Question 23

Prophase in brief

Answer 23

chromosomes condense

Question 24

Metaphase in brief

Answer 24

chromosomes attach and align

Question 25

Anaphase in brief

Answer 25

chromosomes separate

Question 26

Telophase in brief

Answer 26

chromosomes relax

Question 27

How is mitosis different in animals?

Answer 27

• cytokinesis begins during the anaphase
• centrioles pull the chromosomes apart
• pinch created is called a cleavage furrow

Question 28

How is mitosis different in plant cells?

Answer 28

• plant cells do not have centrioles or cleavage furrows

- vesicles filled with cellulose line up and fuse together to form a cell plate

Question 29

How is mitosis different in fungi cells?

Answer 29

• the nuclear envelope does not break down

- spindle poles pull chromosomes to opposite sides of the nuclear envelope and bud off when complete