Question

fill in the blank question. viruses cannot multiply unless they invade a specific cell and take over its genetic and metabolic machinery to make and release quantities of new viruses. need help? review these concept resources.

Explanation:

Viruses are obligate - intracellular parasites. They lack the cellular machinery to replicate on their own and rely on host cells for replication. Once they invade a host cell, they use the cell's genetic and metabolic machinery to produce new viruses.

Answer:

host