DNA Mutations — Unit test Answers

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1
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What role do white blood cells perform in a human body?

A
protect against pathogens
B
conducting electrical impulses
C
secreting enzymes
D
carrying oxygen
2
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Which best compares self-renewal and differentiation?

A
Both are processes that are the result of stem cell division.
B
Both create more of the same types of cells.
C
Both form specialized cells.
D
Both depend on gene expression.
3

What role do red blood cells play in the human body?

A
They protect against injury.
B
They protect against disease-carrying microorganisms.
C
They transport oxygen throughout the body.
D
They aid in blood clotting.
5

Which of these definitions have been paired with the correct type of cell?

A
Blood cells are elongated cells that can contract.
B
Neurons are cells that conduct electrical impulses.
C
Epithelial cells are cells that carry oxygen through the body.
D
Muscle cells are components of blood.
6

Which type of gene is most likely to be widely expressed in the body of someone who has a superficial scrape?

A
the gene that controls the production of stem cells
B
the gene that controls the production of skin cells
C
the gene that controls the production of red blood cells
D
the gene that controls the production of cardiac cells
7

What role do smooth muscle cells perform in a human body?

A
organ contraction
B
skeletal movement
C
blood pumping
D
heart contraction
10

Which type of cell can duplicate indefinitely?

A
stem cell
B
blood cell
C
muscle cell
D
neuron

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