What part of the cell gives ribosomes instructions on how to assemble protein?

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

True or false multiple lane changes must be done individually going through the same procedures for each lane change

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