What component of a virus is injected into the infected cell? A. the tail section
B. the nucleic acid
C. the protein capsid
D. the mitochondria

Which of the following is a consequence of urban heat islands? increased precipitation downwind of the city? increased precipitation upwind of the city? decreased winds within the city? increased winds within the city?

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm