AnswersTX-Biology A-ACC RISD QuestCell Differentiation and Specialization

Cell Differentiation and Specialization Answers

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1
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Which best describes red blood cells?

A
They are colorless.
B
They protect against disease-carrying microorganisms.
C
They transport oxygen throughout the body.
D
They aid in blood clotting.
2
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Which series lists the stages of development in the gestational process in order, from beginning to end?

A
gametes ® embryo ® zygote ® fetus ® organism
B
gametes ® zygote ® embryo ® fetus ® organism
C
embryo ® gametes ® zygote ® fetus ® organism
D
zygote ® gametes ® embryo ® fetus ® organism
3

Which is a source of adult stem cells?

A
bone marrow
B
amniotic fluid
C
embryos
D
gametes
4

All the major organs of the body are formed by week 10 of gestation. Which process makes this possible?

A
growth
B
fertilization
C
self-renewal
D
differentiation
5

What is a source of stem cells that has the characteristics of self-renewal and limited differentiation?

A
Embryonic cell
B
Somatic cell
C
Amniotic fluid
D
Heart muscle
6

Which type of cell is capable of self-renewal?

A
stem cell
B
blood cell
C
muscle cell
D
neuron
7

Which of these pairings is incorrect?

A
blood cells, components of blood
B
neurons, conduct electrical impulses
C
epithelial cells, react to stimuli
D
muscle cells, elongated cells that can contract
8

What must occur for specialized cells like heart and brain cells to form?

A
Cell mutation
B
Fertilization
C
Differentiation
D
Gene suppression
9

Gene expression within the body is controlled by the cells, which determine when a specific gene should or should not be expressed. Influenza (the flu) is caused by a virus that attacks the respiratory system. Which type of gene is likely to be widely expressed in the body of someone who contracts the influenza virus?

A
The gene that controls production of stem cells.
B
The gene that controls production of skin cells.
C
The gene that controls production of red blood cells.
D
The gene that controls production of white blood cells.
10

Which statement best describes embryonic stem cells?

A
Embryonic stem cells are capable of self-renewal only.
B
Embryonic stem cells are capable of differentiation only.
C
Embryonic stem cells are capable of self-renewal and limited differentiation.
D
Embryonic stem cells are capable of self-renewal and unlimited differentiation.

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