What protects the outer layer of all the cells

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs

Amines amides and amino acids are categories of

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