Modified True/False
Indicate whether the sentence or statement is
true or false.
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1.
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Passive immunity doesn’t last as long as active imunity.
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2.
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In the inflammatory response, white blood cells engulf pathogens and
destroy them.
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3.
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Antibiotics cannot cure illnesses caused by viruses.
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4.
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Antibodies are produced by B cells.
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Multiple Choice
Identify the letter of the choice that best
completes the statement or answers the question.
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5.
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How are colds and flu usually spread?
a. | by person-to-person transfer or contact with contaminated objects | b. | by coming into
contact with pathogens that live naturally in soil | c. | through an animal bite or by person-to-person
transfer |
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6.
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How do breathing passages help keep pathogens out of the body?
a. | Mucus and cilia trap pathogens. | b. | Chemicals kill some
pathogens. | c. | Phagocytes in the breathing passages destroy
pathogens. |
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7.
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A cut in the skin can lead to an infection because
a. | the cut kills phagocytes. | b. | it allows pathogens to get into the
body. | c. | it interferes with the immune system’s ability to fight
disease. |
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8.
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What type of white blood cells are part of the inflammatory response?
a. | general engulfing white blood cells | c. | cilia | b. | memory T
cells |
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9.
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Immunity is the body’s
a. | ability to destroy pathogens that the body has been exposed to before they can cause
disease. | c. | inflammatory response. | b. | first line of
defense |
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10.
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How does the body acquire active immunity to a disease without getting the
disease?
a. | through an allergic reaction | c. | by means of the inflammatory
response | b. | through vaccination |
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11.
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Passive immunity is different from active immunity because passive
immunity
a. | lasts a long time. | b. | protects a person from many different
diseases. | c. | involves antibodies that have not been produced by the body of the immunized
person. |
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12.
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Newborn babies have passive immunity to many diseases because
a. | babies’ T cells are more active than those of adults. | b. | babies are given
antibiotics immediately after birth. | c. | babies have antibodies that were produced by
their mothers’ bodies. |
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13.
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A chemical that kills bacteria or slows their growth is called a(n)
a. | aspirin. | c. | antibiotic. | b. | antigen |
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14.
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Which of these will NOT help you recover from a viral infection?
a. | eating well-balanced meals | c. | taking an
antibiotic | b. | getting plenty of rest |
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15.
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The the protein molecules on pathogens that enable the immune system to
distinguish one kind of pathogen from another are called
a. | antigens. | c. | T molecules. | b. | B molecules. |
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16.
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How does HIV damage the immune system?
a. | it causes pnemonia | c. | by delaying the inflammation response | b. | by destroying T
cells |
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17.
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When a person’s own immune system produces antibodies in response to the
presence of a pathogen, that person has
a. | an allergic reaction. | c. | active immunity. | b. | an antibiotic. |
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18.
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Chicken pox, the common cold, herpes, AIDS, and the flu are all casued by
a. | bacteria | c. | viruses | b. | protists |
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19.
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Streptococcus is
a. | a protist that causes strep throat | c. | a bacterium that causes strep
throat | b. | a fungus that causes strep throat |
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20.
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The "Did You Catch it ?" activity modeled
a. | an allergy | c. | how noninfectious diseases spread | b. | how infectious
diseases spread |
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21.
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How does a vaccine work?
a. | It activates the body’s natural defenses. | b. | It weakens the cell
walls of bacteria, causing the cells to burst. | c. | It treats the symptoms of an
infection. |
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22.
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Which of the following stimulates a person’s body to produce chemicals
that destroy viruses or bacteria?
a. | vaccine | b. | endospore | c. | antibiotic |
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Short Answer
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Use the diagram to answer each question. 
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23.
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Arrange the steps shown in the diagram in their proper sequence.
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Essay (Write your answer on the back of the answer sheet.)
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24.
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Suppose that you are exposed to a harmful virus for the first time. The virus
has infected some of your cells and is beginning to spread to other cells.Explain how your
body’s third line of defense, the immune system reacts. Include the following words in your
explanation. (T-cells, B-cells, pathogen, antigen, antibodies). Use a topic sentence, details, and
conclusion.
Example topic sentece: The body’s immune response begins when a pathogen
such as a virus infects cells.
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