AnswersEDG Biology A wLabMitosis

Mitosis Answers

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Early in mitosis, the nucleus, nucleolus, and nuclear envelope begin to dissolve in preparation for cell division. In which stage of the cell cycle is this process reversed?

A
cytokinesis
B
interphase
C
anaphase
D
telophase
2
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Scientists use tissue cultures to study possible medicines that can be used to treat cancer patients. What is one benefit of this procedure?

A
Scientists can observe how cultured cells respond to a medicine before testing it in patients.
B
Cultured cells always respond to a medicine exactly as cells in a patient’s body would.
C
Doctors can determine how to treat every type of cancer from one tissue culture.
D
One tissue culture can show how a medicine will work for every cancer patient.
3

What would happen to skin cells if mitosis did not take place?

A
Skin cells would regrow from other types of cells.
B
Skin cells would be replaced at a slower rate.
C
Skin cells would be replaced with new cells.
D
Skin cells would die and not be replaced.
4

Which best describes the importance of mitosis to living organisms?

A
genetic variation and growth
B
growth and development
C
development and sexual reproduction
D
sexual reproduction and genetic variation
5

After chromosomes are formed, during which phase of mitosis do the chromosomes attach to the spindle fibers by their centromeres?

A
anaphase
B
prophase
C
metaphase
D
telophase
6

In which phase of mitosis are chromosomes first seen as a result of chromatin coiling?

A
prophase
B
anaphase
C
metaphase
D
telophase
7

Which statement best describes cancer cells?

A
They grow as a single layer of cells.
B
They cease to reproduce after 20–50 mitotic divisions.
C
They reproduce only when needed to replace missing cells.
D
They are not regulated by contact inhibition.
8

Mitosis is divided into phases.Which phase of mitosis is shown in the diagram?

Question illustration
A
prophase
B
metaphase
C
anaphase
D
telophase
9

Which is the end result of cytokinesis from a cell undergoing mitosis?

A
one cell that has two identical copies of DNA
B
one cell that has two different copies of DNA
C
two cells that have two identical copies of DNA
D
two cells that have two different copies of DNA
10

Centromeres split apart during

A
prophase
B
metaphase
C
anaphase
D
telophase
11

An example of mitosis at work is a leaf

A
turning yellow.
B
growing.
C
taking in carbon dioxide.
D
performing photosynthesis.
12

An example of mitosis at work is a plant root

A
elongating.
B
absorbing.
C
pointing down.
D
breaking.
13

Which of the steps in this sequence of events is an example of mitosis at work?

A
A baseball hits the arm of a baseball player.
B
The player reacts quickly grabbing his arm.
C
A bruise forms where the ball hit the arm.
D
The bruise slowly disappears as the arm heals.
14

Which are replicated during interphase?

A
sister chromatids
B
chromosomes
C
centromeres
D
nuclei

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