Test Bank
Ch. 1 A Case for Evolutionary Thinking: Understanding HIV
1) In which of the following regions has AIDS killed the largest number of individuals?
A) India
B) Sub-Saharan Africa
C) United States
D) China
E) United Kingdom
ANS: B
: 1.1
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2) The HIV virus contains all of the following components except ________.
A) integrase
B) double-stranded RNA
C) single-stranded RNA
D) reverse transcriptase
E) protease
ANS: B
: 1.1
:
3) The acronym HIV stands for which of the following?
A) human intercellular virus
B) human immune virus
C) human immunodeficiency virus
1
,Test Bank
D) human immunity virus
E) human immunodeficiency vector
ANS: C
: 1.1
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4) Which of the following enzymes is responsible for transcribing viral RNA into DNA?
A) RNA polymerase
B) reverse transcriptase
C) DNA polymerase
D) reverse integrase
E) RNA duplicase
ANS: B
: 1.1
:
2
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5) The proteins that enable the HIV virus to bind to cells are typically CD4 and CCR5. On what type of
cells are these proteins typically observed?
A) plasma cells
B) dendritic cells
C) effector helper T cells
D) memory helper T cells
E) both C and D
ANS: E
: 1.1
:
6) The AIDS phase of HIV infection begins when the concentration of CD4 T cells in the blood drops
below what concentration?
A) 2,000 cells per cubic millimeter
B) 1,000 cells per cubic millimeter
C) 500 cells per cubic millimeter
D) 200 cells per cubic millimeter
E) No CD4 T cells are observed.
ANS: D
: 1.1
:
7) Which of the following drug categories are used to treat HIV infections?
A) integrase inhibitors
B) protease inhibitors
C) reverse transcriptase inhibitors
D) DNAse inhibitors
3
, Test Bank
E) fusion inhibitors
ANS: D
: 1.2
:
8) Coreceptor inhibitors block HIV infection by preventing which of the following?
A) binding of the HIV virion onto the plasma membrane
B) binding of the HIV virion onto the CCR5 receptor
C) binding of the HIV virion onto the gp120 protein
D) degrading the coreceptor so the virion cannot attach
E) binding of the HIV virion onto the CD4 receptor
ANS: B
: 1.2
: Application/Analysis
4
Ch. 1 A Case for Evolutionary Thinking: Understanding HIV
1) In which of the following regions has AIDS killed the largest number of individuals?
A) India
B) Sub-Saharan Africa
C) United States
D) China
E) United Kingdom
ANS: B
: 1.1
:
2) The HIV virus contains all of the following components except ________.
A) integrase
B) double-stranded RNA
C) single-stranded RNA
D) reverse transcriptase
E) protease
ANS: B
: 1.1
:
3) The acronym HIV stands for which of the following?
A) human intercellular virus
B) human immune virus
C) human immunodeficiency virus
1
,Test Bank
D) human immunity virus
E) human immunodeficiency vector
ANS: C
: 1.1
:
4) Which of the following enzymes is responsible for transcribing viral RNA into DNA?
A) RNA polymerase
B) reverse transcriptase
C) DNA polymerase
D) reverse integrase
E) RNA duplicase
ANS: B
: 1.1
:
2
,Test Bank
5) The proteins that enable the HIV virus to bind to cells are typically CD4 and CCR5. On what type of
cells are these proteins typically observed?
A) plasma cells
B) dendritic cells
C) effector helper T cells
D) memory helper T cells
E) both C and D
ANS: E
: 1.1
:
6) The AIDS phase of HIV infection begins when the concentration of CD4 T cells in the blood drops
below what concentration?
A) 2,000 cells per cubic millimeter
B) 1,000 cells per cubic millimeter
C) 500 cells per cubic millimeter
D) 200 cells per cubic millimeter
E) No CD4 T cells are observed.
ANS: D
: 1.1
:
7) Which of the following drug categories are used to treat HIV infections?
A) integrase inhibitors
B) protease inhibitors
C) reverse transcriptase inhibitors
D) DNAse inhibitors
3
, Test Bank
E) fusion inhibitors
ANS: D
: 1.2
:
8) Coreceptor inhibitors block HIV infection by preventing which of the following?
A) binding of the HIV virion onto the plasma membrane
B) binding of the HIV virion onto the CCR5 receptor
C) binding of the HIV virion onto the gp120 protein
D) degrading the coreceptor so the virion cannot attach
E) binding of the HIV virion onto the CD4 receptor
ANS: B
: 1.2
: Application/Analysis
4
