Human Biology: Concepts and Current Issues
7th Edition
ISBN: 9780321821652
Author: Michael D. Johnson
Publisher: Benjamin Cummings
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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
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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- Why might an HIV/AIDS vaccine actually give some people a false sense of security?arrow_forwardWhy are most unimmunized children protected against diseases such as measles?Choose one: A. They lack the host cells for viral replication. B. They are protected by herd immunity. C. They have developed immunity toward the measles virus. D. They still have circulating maternal antibodies.arrow_forwardIdentify the statement that does not provide accurate evidence as to why HIV is so lethal. a. During the course of infection, HIV increases immune activation by altering intestinal physiology to let more microbes into the blood supply. b. Immune evasion increases in many infections due to HIV virions evolving new and unrecognizable epitopes (antigens). c. In many individuals the virus population evolves to use different receptors to gain access to a greater diversity of host immune cells. d. HIV causes enhanced replication and proliferation of T cells, which allows the immune system to work better at defending against pathogens.arrow_forward
- To date, there is no cure for HIV. Because of this, the will be present in an infected individual throughout their lifetime. This makes HIV a A.) latent disease. B.) zoonotic disease. C.) chronic disease. D.) nosocomial disease. E.) convalescent disease.arrow_forwardA researcher discovers that a breed of rabbits have antibodies that can neutralize HIV. The researcher decides to extract the antibody concentrated plasma and deliver it to a patient with HIV. What would you likely expect to see? a. The HIV patient will now have a fighting chance to eliminate HIV as the antibodies will not discriminate and bind to the same viral antigenic determinants. b. The HIV patient will form antibodies against the rabbit serum antibodies. c. The rabbit antibodies will opsonize the HIV antigenic determinants on the MHC II. d. The rabbit antibodies will never work because HIV in humans are different than HIV in rabbits.arrow_forwardby reading the text above answer the question What is compulsory HIV Testing? When is it allowed? Provide your legal basis or justification. limit answer into 4 to 6 sentences onlyarrow_forward
- What is the most successful treatment during pregnancy to reduce transmission of HIV from mother to fetus? A) Pre-exposure prophylaxis B) Protease inhibitors C) Reverse transcriptase inhibitors D) Fusion inhibitorsarrow_forwardWhich of the following best explains why vaccination of humans against rabies can be delayed until after exposure to a potential source of infection? A) Antibody responses are more rapid than those against other viruses B) T lymphocyte responses are more rapid than those against other viruses C) The virus does not infect any cells for several weeks or months D) The virus does not reach i target organ for several weeks or monthsarrow_forwardWhat is the difference between HIV and AIDS? Include some symptoms associated with each.arrow_forward
- Which of the following is a viral disease that destroys the immune system? A) anemia B) HIV-AIDS C) asthma D) tuberculosisarrow_forwardOnce a person is infected by HIV, can they be reinfected? Explain your answer.arrow_forwardWhich of the following statements best describes the HIV/AIDS infection rate today? A. Most people infected with HIV/AIDS live in countries outside of Africa. B. Africa is home to 15% of the world’s population, and about 15% of people with HIV live in Africa. C. Due to advancements in medicine, few people in the world are infected with HIV/AIDS. D. Africa is home to less than 15% of the world’s population, and 68% of people with HIV live in Africa.arrow_forward
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