Even though they're extremely small, viruses are too large to enter a cell by passive or active transport and thus must enter a host cell via
A) diffusion.
B) osmosis.
C) exocytosis.
D) endocytosis.

Question

Quizplus · Accepted Answer

Viruses are too large to enter a cell by passive or active transport. Endocytosis is the process in which a cell takes in materials from the outside by engulfing them within a vesicle. Virus particles can enter the cell through endocytosis when the viral surface proteins bind to cellular receptors, causing the virus to be taken up into the cell in a vesicle.

Even Though They're Extremely Small, Viruses Are Too Large to Enter