AnswersEDG Biology A wLabMitosis

Mitosis Answers

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What is the purpose of interphase in the cell cycle?

A
active growth and metabolism of the cell
B
active cell growth and cytokinesis
C
active division of the plasma membrane before mitosis
2
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Label B

A
A. Centromeres are split apart, and sister chromatids are pulled to opposite poles of the cell.
B
B. The chromosomes that were doubled become attached to the spindle fiber by their centromeres.
C
C. Chromatin in the cell coils into chromosomes that can be seen.
D
D. Sister chromatids are separated and contain identical copies of DNA.
3

Label C

A
A. Centromeres are split apart, and sister chromatids are pulled to opposite poles of the cell.
B
B. The chromosomes that were doubled become attached to the spindle fiber by their centromeres.
C
C. Chromatin in the cell coils into chromosomes that can be seen.
D
D. Sister chromatids are separated and contain identical copies of DNA.
4

Label D

A
A. Centromeres are split apart, and sister chromatids are pulled to opposite poles of the cell.
B
B. The chromosomes that were doubled become attached to the spindle fiber by their centromeres.
C
C. Chromatin in the cell coils into chromosomes that can be seen.
D
D. Sister chromatids are separated and contain identical copies of DNA.
5

What occurs during G1 and G2 in the cell cycle?

A
synthesis of the cell
B
growth of DNA
C
growth of the cell
6

Label the steps of mitosis using the drop-down menus.Label A Label B Label C Label D

A
Anaphase
B
Metaphase
C
Telophase
D
Prophase
E
Anaphase
F
Metaphase
G
Telophase
H
Prophase
I
Anaphase
J
Metaphase
K
Telophase
L
Prophase
M
Anaphase
N
Metaphase
O
Telophase
P
Prophase
7

Label A

A
A. Centromeres are split apart, and sister chromatids are pulled to opposite poles of the cell.
B
B. The chromosomes that were doubled become attached to the spindle fiber by their centromeres.
C
C. Chromatin in the cell coils into chromosomes that can be seen.
D
D. Sister chromatids are separated and contain identical copies of DNA.
8

After duplication, at what point does a cell become two cells with identical DNA?

A
starting in prophase
B
end of anaphase
C
end of cytokinesis
9

Which examples demonstrate growth of an organism as a result of mitosis?

A
a plant withering in the sunlight
B
a baby growing into a toddler
C
a seed becoming a plant
10

Which examples show repair or replacement of damaged cells?

A
a scrape being healed
B
scars forming where a cut once belonged
C
skin flaking off your arm in the winter
11

What is typical of cell reproduction when normal cells are reproduced in a petri dish from a tissue culture? Check all that apply.

A
Cells reproduce only when there is room in the petri dish.
B
Cells reproduce one layer thick and then stop reproducing.
C
Cells undergo unlimited reproduction by mitosis.
D
When a cell dies or is damaged, a new one is created to fill the empty spot.
12

What is the benefit to using tissue cultures with cancer patients?

A
Doctors can study how quickly cancer spreads in the culture so they know what medicine to use.
B
Medications can be tested on the cancer culture before being injected into the patient.
C
The cancer culture can be studied to determine if oral medicine is the best treatment for the patient.
13

What is typical of cell reproduction when cancer cells are reproduced in a petri dish from a tissue culture? Check all that apply.

A
Cells undergo 20 to 50 mitotic divisions.
B
Cells reproduce without limit.
C
Cells reproduce with multiple layers.
D
Cell reproduction never stops.

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