Paramecium, shown here, possess that counteract the effects of osmosis.
a)
oral grooves
b)
ciliated pellicle
c)
contractile vacuoles
d)
micro and macro nuclei

The answer is C) contractile vacuoles 

Contractile vacuole regulates the quantity of the water inside the cell. Osmoregulation in Paramecium is carried out by this organelle. There can be one or many vacuoles, depending on species. It works that way that it pumps the water out. Water inside the cell is usually absorbed by osmosis from Paramecium's surrounding.

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.

The bags should be yellow i believe