Astudent viewing a cell with a microscope observes a cell wall, a cell membrane, and a nucleus. the presence of these structures indicates that the student is looking at a cell of what animal?

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