Which best explains why viruses do not have special structures or enzymes that allow them to make their own food? Viruses can use energy of living cells that they infect. Viruses can replicate inside a host that they infect. Viruses can cause contagious illnesses in host cells. Viruses integrate their RNA or DNA into infected cells.

Viruses can use energy of living cells that they infect

Viruses can replicate inside a host that they infect this is the reason why viruses do not have special structure or enzymes that allows them to make their own food. They just replicate and infect but they never make their own food.

Viruses depend on the host cells that they affect to reproduce. When found outside of host cells, viruses live as a protein coat or capsid, sometimes contained within a membrane. The capsid surrounds either DNA or RNA which codes for the virus elements.

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.