What is true about the structure or function of the plasma membrane? A. The double layer prevents anything from entering the cell.

B. Hydrophilic molecules attract the water the cell requires.

C. The processes of endocytosis and exocytosis occur here.

D. It is made entirely of integral proteins.

12) several teeth were found in an area of flat land covered with trees and plants. the teeth were examined by a paleontologist, and it was determined that the teeth came from a shark. they found many other shark teeth in this area. however, the people who discovered the teeth were puzzled, because there was no source of water near where the fossils were found. what is the paleontologist's best explanation for why the teeth were found in this area? a) sharks used to live on flat land. b) this area was once covered with salt water. c) this area was once covered with freshwater. d) someone buried the shark teeth deep in the ground.