Mitosis Answers

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3

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.
4

Which are replicated during interphase?

A
sister chromatids
B
chromosomes
C
centromeres
D
nuclei
6

Scientists use tissue cultures to study possible medicines that can be used to treat cancer patients. What is one benefit of this procedure?

A
Patients do not receive harmful or ineffective medication.
B
The cultured cells are not in their normal environment.
C
Doctors know how to treat all types of cancer.
D
One tissue culture can be used for all cancer patients.
7

An example of mitosis at work is a leaf

A
turning yellow.
B
growing.
C
taking in carbon dioxide.
D
performing photosynthesis.
8

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
10

Which statement accurately describes the relationship between cytokinesis and mitosis?

A
Mitosis includes interphase and cytokinesis.
B
Cytokinesis precedes mitosis in the cell cycle.
C
Cytokinesis is not a phase of mitosis, but occurs during mitosis.
D
Interphase includes cytokinesis and mitosis.

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