Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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Mucous membranes a. | cover all the body’s surfaces. | b. | line internal
body surfaces that are in contact with the environment. | c. | produce
antibodies to combat infection. | d. | secrete sweat, which has antibacterial
enzymes. | | |
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2.
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All
of the following possess mucous membranes except the a. | digestive
tract. | c. | nasal
passages. | b. | surface of the skin. | d. | vagina. | | | | |
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3.
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When
the inflammatory response is triggered, a. | damaged or infected cells release chemical alarm
signals. | b. | more fluid than normal leaks from capillaries near the injury,
and swelling results. | c. | white blood cells attack invading
pathogens. | d. | All of the above | | |
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4.
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Which
of the following engulfs foreign cells? a. | helper T cell | c. | macrophage | b. | B
cell | d. | antibody | | | | |
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5.
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John
and James are identical twins. During the summer following their fifteenth birthday, they went on a
vacation and stayed in a cabin with two of their cousins. One of the cousins came down with the
chicken pox in the middle of the vacation. Chicken pox is caused by a virus. Two weeks later, John
came down with chicken pox. James, however, never developed any symtoms of the disease. Which of the
following is the best explanation for the different responses John and James had to exposure to the
same disease. a. | John and James
are not really identical twins. James inherited an immunity to chicken pox but John did
not. | b. | Even though John
and James are identical twins, they produce different kinds of immune system cells. James had killer
T cells that could recognize and destroy chicken pox viruses, while John did
not. | c. | James had been
exposed to chicken pox at an earlier age and developed the disease. His body produced memory cells
that protected him from further infections of the disease. John did not get exposed to chicken pox at
an earlier age. | d. | James had a cold at the time he was exposed to the chicken pox
virus. The cold virus stimulated his body to produces lots of B cells, which were then also able to
recognize and bind to the chicken pox viruses. John did not have a cold at the time he was exposed to
the chicken pox. | | |
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6.
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Autoimmune diseases occur when a. | cells release antihistamine. | b. | a person is
infected with HIV. | c. | the body manufactures “anti-self”
antibodies. | d. | a person receives a blood transfusion of the wrong
type. | | |
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