Acell's work is carried out by the many different types of molecules it assembles.
are especially important because they are involved in a variety of processes, such as cell signaling, immune response, and enzyme activity.
nucleic acids
carbohydrates
proteins
lipids

Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. once a virus gains entry into the body, it invades a host cell in order to? a. synthesize antibodies for defense b. deactivate the host cell's defenses c. access cell processes for reproduction d. metabolize host proteins and grow