Evolutionary Analysis 5th Edition by Herron Jon; Freeman Scott ISBN 9780321998378
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Chapter 1-20
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Chapter 1 d d d A Case for Evolutionary Thinking: Understanding HIV
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1) In which of the following regions has AIDS killed the largest number of individuals?
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A) India
B) Sub-Saharan Africa d
C) United States d
D) China
E) United Kingdom d
Answer: B
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dSection: 1.1 d
Skill: Knowledge/Comprehension
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2) The HIV virus contains all of the following components except
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A) integrase
B) double-stranded RNA d
C) single-stranded RNA d
D) reverse transcriptase d
E) protease
Answer: B
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Section:
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Skill: Knowledge/Comprehension
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3) The acronym HIV stands for which of the following?
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A) human intercellular virusd d
B) human immune virus d d
C) human immunodeficiency virus
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D) human immunity virus d d
E) human immunodeficiency vector
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Answer: C
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Section: 1.1 d
Skill: Knowledge/Comprehension
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4) Which of the following enzymes is responsible for transcribing viral RNA into DNA?
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A) RNA polymerase d
B) reverse transcriptase d
C) DNA polymerase
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D) reverse integrase d
E) RNA duplicased
Answer: B
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Section: 1.1
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Skill: Knowledge/Comprehension
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,5) The proteins that enable the HIV virus to bind to cells are typically CD4 and CCR5. On what
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type of cells are these proteins typically observed?
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A) plasma cells d
B) dendritic cells d
C) effector helper T cells d d d
D) memory helper T cells d d d
E) both C and D d d d
Answer: E
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Section: 1.1
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Skill: Knowledge/Comprehension
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6) The AIDS phase of HIV infection begins when the concentration of CD4 T cells in the blood
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drops below what concentration?
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A) 2,000 cells per cubic millimeter
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B) 1,000 cells per cubic millimeter
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C) 500 cells per cubic millimeter
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D) 200 cells per cubic millimeter
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E) No CD4 T cells are observed.
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Answer: D
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Section: 1.1 d
Skill: Knowledge/Comprehension
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7) Which of the following drug categories are used to treat HIV infections?
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A) integrase inhibitors d
B) protease inhibitors d
C) reverse transcriptase inhibitors d d
D) DNAse inhibitors d
E) fusion inhibitors d
Answer: D
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Section: 1.2
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Skill: Knowledge/Comprehension
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8) Coreceptor inhibitors block HIV infection by preventing which of the following?
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A) binding of the HIV virion onto the plasma membrane
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B) binding of the HIV virion onto the CCR5 receptor
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C) binding of the HIV virion onto the gp120 protein
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D) degrading the coreceptor so the virion cannot attach d d d d d d d
E) binding of the HIV virion onto the CD4 receptor
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Answer: B
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Section: 1.2 d
Skill: Application/Analysis
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9) What is the effect of the ∆32 allele of CCR5 on HIV binding?
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A) appears on the surface of CD4 T cells, but the HIV virion is unable to infect the host cell
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B) does not appear on the surface of CD4 T cells
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C) appears on the surface of the CD4 T cells and inactivates the virion upon binding
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D) interferes with binding of the virion to the CD4 receptor protein
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,E) appears on the surface of the CD4 T cells and causes the virion to lyse upon binding
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Answer: B
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Section: 1.3 d
Skill: Application/Analysis
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10) The ∆32 allele of CCR5 is found at the highest frequency in which of the following
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populations?
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A) Africans
B) Japanese
C) North Americans d
D) Europeans
E) South Americans d
Answer: D
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dSection: 1.3 d
Skill: Knowledge/Comprehension
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11) HIV-1 is believed to have been transmitted to humans from which of the following
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organisms?
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A) gorillas
B) sooty mangabeys d
C) African green monkeys d d
D) chimpanzees
E) baboons
Answer: D
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Section:
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d1.4
Skill: Knowledge/Comprehension
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12) HIV-1 Group M is responsible for 95% of human infections. When is it estimated that HIV-1
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Group M was transferred to humans?
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A) 1980
B) 1960
C) 1930
D) 1995
E) 1900
Answer: C d
Section:
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Skill: Knowledge/Comprehension
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13) Antibodies and killer T cells recognize HIV or HIV-infected cells by binding to short pieces
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of viral proteins displayed on the virus or the infected host cell. These short pieces of viral
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proteins are called
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A) coat proteinsd
B) virosomes
C) proteosomes
D) epitopes
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, E) episomes
Answer: D
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