Transcript Chapter Review Chapter 21 Using Key Terms

Chapter 21
Preview
• Key Terms
• Key Ideas
• Graphics
• Critical Thinking
Chapter Review
Chapter 21
Chapter Review
Using Key Terms
1. A __________ is a disease that spreads
quickly through the human populations all
over the world.
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Using Key Terms
1. A pandemic is a disease that spreads quickly
through the human populations all over the
world.
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Using Key Terms
2. ___________________ is the virus that
primarily infects cells of the immune system
and that causes AIDS.
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Using Key Terms
2. Human immunodeficiency virus (HIV) is the
virus that primarily infects cells of the immune
system and that causes AIDS.
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Using Key Terms
3. ___________________ is the disease that is
caused by HIV infection, which weakens the
immune system.
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Using Key Terms
3. Acquired immune deficiency syndrome (AIDS)
is the disease that is caused by HIV infection,
which weakens the immune system.
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Understanding Key Ideas
4. About how many people in the United States
are infected with HIV?
A. 100-200
B. 10,000-12,000
C. 850,000-900,000
D. 3,000,000
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Understanding Key Ideas
4. About how many people in the United States
are infected with HIV?
A. 100-200
B. 10,000-12,000
C. 850,000-900,000
D. 3,000,000
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Understanding Key Ideas
5. What can happen during Phase III of HIV
infection?
A. opportunistic infection
B. few symptoms
C. low T cell count
D. both (a) and (c)
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5. What can happen during Phase III of HIV
infection?
A. opportunistic infection
B. few symptoms
C. low T cell count
D. both (a) and (c)
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6. Which of the following behaviors has the
highest risk for spreading HIV?
A. shaking hands with an infected person
B. sexual intercourse with an infected person
C. using a glass used by an infected person
D. kissing an infected person
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Understanding Key Ideas
6. Which of the following behaviors has the
highest risk for spreading HIV?
A. shaking hands with an infected person
B. sexual intercourse with an infected person
C. using a glass used by an infected person
D. kissing an infected person
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Understanding Key Ideas
7. Which of the following is one way you can
eliminate the risks of HIV and AIDS?
A. drug use
B. abstinence
C. sexual activity
D. sharing needles
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Understanding Key Ideas
7. Which of the following is one way you can
eliminate the risks of HIV and AIDS?
A. drug use
B. abstinence
C. sexual activity
D. sharing needles
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Interpreting Graphics
8. How many reported
cases of HIV infection
occurred in the
United States in
1999?
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8. How many reported cases of HIV infection
occurred in the United States in 1999?
More than 400,000
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9. What is the
percentage increase
in the reported
number of people
with HIV infection
from 1999 to 2000?
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Interpreting Graphics
9. What is the percentage increase in the
reported number of people with HIV infection
from 1999 to 2000?
Approximately 10 percent
[(450 – 410)/410 x 100 = 9.8]
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Critical Thinking
10. How would a teen know if he or she is at risk
for HIV infection?
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Critical Thinking
10. How would a teen know if he or she is at risk
for HIV infection?
A teen would know that he or she is at risk of
getting infected with HIV if he or she engages
in high-risk behaviors. These behaviors
include engaging in sexual activity and sharing
needles or drug injection equipment with an
infected person.