Which of the following best describes the way a virus enters a host cell?
a) It binds to receptors on the cell surface, "tricking" the cell into allowing it in.
b) It creates an electrochemical gradient outside the cell and enters through diffusion.
c) It "slices" through the cell membrane and invades the cell through the hole.
d) It injects protein into the cell and this protein transforms into a new virus.
Answer: A
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Biology
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