Question

covid-19 is a disease caused by a virus named sars-cov-2. it has a crown of protein spikes covering its surface. what is the function of the projections on the outer surface of the virus? select one: a. to reproduce inside the host cell b. to inject its rna into the host cell c. to cause the host to experience viral symptoms d. to attach to a host cell

Explanation:

The protein spikes (projections) on the surface of SARS-CoV-2 bind to specific receptors on the surface of host cells, which is the first step in the viral infection process. Reproduction, RNA injection, and symptom development occur after this initial attachment, so those are not the function of the spikes themselves.

Answer:

d. To attach to a host cell