How to calculate the concentration of all species at equilibrium?

Generally speaking:

Concentration of product(s)/concentration of reactant(s)

If the balanced equation has a coefficient of more than one, you would put the concentration for that compound to the power of that number.

For example:

A + 2B ---> C

K= [C]/[A][B]^2

Hope that helps!

Cis your correct answer

When a virus infects a host cell, it uses the cell's machinery to make copies of its own genetic material in a process called replication. finally, during the process of self-assembly, that protein shell and the copies of the virus's genetic material are assembled into new viruses.