AnswersLHS Biology 1Unit Test

Mitosis Answers

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1
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In which of these stages is mitosis most important?

A
A tiger cub is born.
B
A tiger cub learns to walk.
C
A tiger cub begins to grow.
D
A tiger cub play-fights.
2
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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
3

Which are replicated during interphase?

A
sister chromatids
B
chromosomes
C
centromeres
D
nuclei
4

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.
5

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.
6

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.
7

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
8

An example of mitosis at work is a plant root

A
elongating.
B
absorbing.
C
pointing down.
D
breaking.
9

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.
10

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

Question illustration
A
prophase
B
metaphase
C
anaphase
D
telophase

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Mitosis Answers — LHS Biology 1