Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
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Textbook Question
Chapter 9, Problem 15TY
Which of the following statements about HIV is true?
a. Latex condoms are 100% effective in blocking transmission of HIV
b. Most individuals who progress to Phase II of HIV infection remain in Phase II and never progress to Phase III (AIDS).
c. HIV specifically impairs the cell-mediated immune response.
d. Anti-HIV medications such as AZT and maraviroc can cure HIV infection.
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Chapter 9 Solutions
Human Biology: Concepts and Current Issues (8th Edition)
Ch. 9 - Prob. 1QCCh. 9 - Prob. 2QCCh. 9 - Define the term pathogen and give some examples.Ch. 9 - Prob. 2CRCh. 9 - Prob. 3CRCh. 9 - Prob. 4CRCh. 9 - Prob. 5CRCh. 9 - Describe in general terms the distinction between...Ch. 9 - Describe the concept of an antigen and how it...Ch. 9 - Prob. 8CR
Ch. 9 - Prob. 9CRCh. 9 - Prob. 10CRCh. 9 - Prob. 1TYCh. 9 - Prob. 2TYCh. 9 - Prob. 3TYCh. 9 - Prob. 4TYCh. 9 - Prob. 5TYCh. 9 -
6. Which of the following is a benefit of...Ch. 9 - Prob. 7TYCh. 9 -
8. The following are steps in phagocytosis: (1)...Ch. 9 - Prob. 9TYCh. 9 - Prob. 10TYCh. 9 - Prob. 11TYCh. 9 - Prob. 12TYCh. 9 - Which of the following increases the likelihood of...Ch. 9 - Which of the following does not belong with the...Ch. 9 - Which of the following statements about HIV is...Ch. 9 - Prob. 1AWKCh. 9 - Prob. 2AWKCh. 9 -
3. Everyone knows that bacteria can cause...Ch. 9 - Prob. 4AWKCh. 9 - Prob. 5AWKCh. 9 - Why is it that most people get the chicken pox...Ch. 9 - The immune system is supposed to defend us from...
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- The use of multiple drugs in HAART to treat AIDS has a. completely removed the virus from infected individuals. b. reduced the viral level in the bloodstream to undetectable levels. c. been a complete failure. d. been supplanted by the new HIV vaccine.arrow_forwardBased on the experience of the Philippines with the dengue vaccine, what can you conclude regarding the use of vaccines? a. Vaccines should be tested for long period of time before allowing any individual to take the vaccine.b. All aspects as on the long-term effects of vaccines, its effect on children, pregnant women, effect to reproductive system, immediate side effects and many more should be analysed first.c. Vaccines take time to be developed and studied for their effectivity and effects.d. All vaccines have side effects, only few individuals should have them.e. Vaccines that were tested for decades could be trusted for its safety but still precaution should be observed.arrow_forwardWhich of the following virus does not use CXCR4 as a receptor? a. HIV-2 b. SIV c. poliovirus d. HIV-1arrow_forward
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- When a surgeon conducts a cardiac bypass operation by transplanting a piece of vein from a patient's leg to the same patient's heart, this is a(n) a. rejected graft b. autograft c. allograft d. type IV hypersensitivity e. cardiograftarrow_forwardBased on the experience of the Philippines with the dengue vaccine, what can you conclude regarding the use of vaccines? a. Vaccines should be tested for long period of time before allowing any individual to take the vaccine. b. Vaccines take time to bedeveloped and studied for their effectivity and effects. C. All aspects as on the long term effects of vaccines, its effect on children, pregnant women, effect to reproductive system, immediate side effects and many more should be analysed first. . All vaccines have side effects, only few individuals should have them. d. Vaccines that were tested for decades could be trusted for its safety but still precaution should be observed. e.arrow_forwardA mutation in the spike protein of the SARS-CoV-2 virus has been detected in a strain that is quickly dominating the number of cases in the United States and Europe. What virulence factor function has been improved/selected for in this new variant? a. replication efficiency b. lysis of host cells c. cell toxicity d. attachment to cellsarrow_forward
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