Multiple Choice
Viruses acquire envelopes around their nucleocapsids during which stage of the viral replication cycle?
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18. Viruses, Viroids, & Prions
Introduction to Animal Virus Infections
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HIV spikes attach to CD4+ receptors found on which type of human cells?
A
Red blood cells
B
Helper T lymphocytes
C
Macrophages
D
B lymphocytes
Verified step by step guidance1
Understand that HIV targets specific cells in the human immune system by binding to CD4+ receptors on their surfaces.
Recall that CD4+ receptors are primarily found on Helper T lymphocytes, which play a crucial role in coordinating the immune response.
Recognize that while macrophages and B lymphocytes are important immune cells, they do not predominantly express CD4+ receptors like Helper T lymphocytes do.
Note that red blood cells do not have CD4+ receptors and are not involved in HIV attachment or infection.
Conclude that HIV spikes attach specifically to CD4+ receptors on Helper T lymphocytes, enabling the virus to enter and infect these cells.
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