How might the earth be different if an ocean had not formed on its surface?

Although plant, animal, and bacterial cells are different in many ways, name the cell part they all have in common besides DNA.

Describe both innate and acquired immune systems and the importance of vaccines.

Viruses cannot ... a) be crystallized b) live in bacteria c) reproduce on their own d) cause disease in plants

5. The diagram shows a position on Earth at 3:00 a. m. What is likely to happen to that position in five hours? a. It will remain stationary. b. It will rotate and face the sun. c. It will rotate and face away from the sun.

Name the irregular ridges of muscle lining the ventricles.

Which phase occurs directly after s phase

Which organ synthesizes more than 90 percent of plasma proteins?

In the alternation of generations life cycle the zygote undergoes mitosis to become a A. gametophyte. B. sporophyte. C. spore. D. gamete.

Why must cells be able to both transcribe and replicate their dna? the cell's dna must be transcribed before it can be replicated. new cells can only be created after transcription has taken place.

List five introduced species that present a serious threat to their new communities. explain the damage done by each introduced species.