Multiple Choice
The viral process of attaching to a host cell receptor prior to infecting the cell is called:
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18. Viruses, Viroids, & Prions
Introduction to Animal Virus Infections
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Which bloodborne pathogen is known for progressively destroying the host's immune system by targeting CD4+ T helper cells?
A
Epstein-Barr virus (EBV)
B
Hepatitis C virus (HCV)
C
Human immunodeficiency virus (HIV)
D
Hepatitis B virus (HBV)
Verified step by step guidance1
Understand the role of CD4+ T helper cells in the immune system: these cells are crucial for coordinating the immune response by activating other immune cells.
Recognize that the question asks for a bloodborne pathogen that progressively destroys the host's immune system by specifically targeting CD4+ T helper cells.
Review the characteristics of each virus listed: Epstein-Barr virus (EBV) primarily causes infectious mononucleosis; Hepatitis B virus (HBV) and Hepatitis C virus (HCV) mainly affect the liver.
Identify that Human immunodeficiency virus (HIV) is unique among these viruses because it infects and depletes CD4+ T helper cells, leading to immune system failure.
Conclude that the pathogen known for this progressive destruction of the immune system by targeting CD4+ T helper cells is HIV.
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