AnswersNY-Life Science Biology Term 1 HillcrestCell Differentiation and Specialization

Cell Differentiation and Specialization Answers

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1
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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
2
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A scientist is studying specialized cells that help pump blood. Which cells is she most likely studying?

A
neurons, which are a type of muscle cell
B
cardiac cells, which are a type of muscle cell
C
epithelial cells, which are a type of blood cell
D
white blood cells, which are a type of blood cell
3

Which type of cell can duplicate indefinitely?

A
stem cell
B
blood cell
C
muscle cell
D
neuron
4

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

Scientists study salamanders and their ability to regenerate lost legs and tails. What additional information is essential for scientists to understand in order to apply this ability to humans who have lost limbs?

A
how quickly the body parts regenerate
B
how similar salamanders are to humans
C
which body parts are most often lost
D
which genes control regeneration
6

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.
7

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
8

Which process makes it possible for all the major organs of the body to be formed by week 10 of human development?

A
growth
B
fertilization
C
self-renewal
D
differentiation
9

Which are sources of adult stem cells? Select three options. bone marrowamniotic fluidbrain gametesliverembryo

A
bone marrow
B
amniotic fluid
C
brain
D
gametes
E
liver
F
embryo

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