chapter review chapter 21 preview key terms key ideas graphics critical thinking
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Chapter ReviewChapter 21
Preview
• Key Terms
• Key Ideas
• Graphics
• Critical Thinking
Chapter ReviewChapter 21
Using Key Terms
1. A __________ is a disease that spreads quickly through the human populations all over the world.
Chapter ReviewChapter 21
Using Key Terms
1. A pandemic is a disease that spreads quickly through the human populations all over the world.
Chapter ReviewChapter 21
Using Key Terms
2. ___________________ is the virus that primarily infects cells of the immune system and that causes AIDS.
Chapter ReviewChapter 21
Using Key Terms
2. Human immunodeficiency virus (HIV) is the virus that primarily infects cells of the immune system and that causes AIDS.
Chapter ReviewChapter 21
Using Key Terms
3. ___________________ is the disease that is caused by HIV infection, which weakens the immune system.
Chapter ReviewChapter 21
Using Key Terms
3. Acquired immune deficiency syndrome (AIDS) is the disease that is caused by HIV infection, which weakens the immune system.
Chapter ReviewChapter 21
Understanding Key Ideas
4. About how many people in the United States are infected with HIV?
A. 100-200B. 10,000-12,000C. 850,000-900,000D. 3,000,000
Chapter ReviewChapter 21
Understanding Key Ideas
4. About how many people in the United States are infected with HIV?
A. 100-200B. 10,000-12,000C. 850,000-900,000D. 3,000,000
Chapter ReviewChapter 21
Understanding Key Ideas
5. What can happen during Phase III of HIV infection?
A. opportunistic infectionB. few symptoms C. low T cell countD. both (a) and (c)
Chapter ReviewChapter 21
Understanding Key Ideas
5. What can happen during Phase III of HIV infection?
A. opportunistic infectionB. few symptoms C. low T cell countD. both (a) and (c)
Chapter ReviewChapter 21
Understanding Key Ideas
6. Which of the following behaviors has the highest risk for spreading HIV?
A. shaking hands with an infected personB. sexual intercourse with an infected personC. using a glass used by an infected personD. kissing an infected person
Chapter ReviewChapter 21
Understanding Key Ideas
6. Which of the following behaviors has the highest risk for spreading HIV?
A. shaking hands with an infected personB. sexual intercourse with an infected personC. using a glass used by an infected personD. kissing an infected person
Chapter ReviewChapter 21
Understanding Key Ideas
7. Which of the following is one way you can eliminate the risks of HIV and AIDS?
A. drug useB. abstinenceC. sexual activityD. sharing needles
Chapter ReviewChapter 21
Understanding Key Ideas
7. Which of the following is one way you can eliminate the risks of HIV and AIDS?
A. drug useB. abstinenceC. sexual activityD. sharing needles
Chapter ReviewChapter 21
Interpreting Graphics8. How many reported
cases of HIV infection occurred in the United States in 1999?
Chapter ReviewChapter 21
Interpreting Graphics8. How many reported cases of HIV infection
occurred in the United States in 1999?
More than 400,000
Chapter ReviewChapter 21
Interpreting Graphics9. What is the
percentage increase in the reported number of people with HIV infection from 1999 to 2000?
Chapter ReviewChapter 21
Interpreting Graphics9. 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]
Chapter ReviewChapter 21
Critical Thinking
10. How would a teen know if he or she is at risk for HIV infection?
Chapter ReviewChapter 21
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.
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