Question

the host cells that viruses can infect are determined by the
multiple choice
○ dna in host cells.
○ concentration of host cells in vicinity.
○ proximity of host cells.
○ receptors on the host cells.

Explanation:

Viruses attach to host cells via specific receptors on the host cell surface. DNA in host cells, cell concentration, or proximity don't determine viral host range—receptors do, as viruses need complementary receptors to infect.

Answer:

D. receptors on the host cells.