Cell membranes are made up of a phospholipid bilayer. which part of the phospholipid bilayer interacts with water, and which part does not interact with water?

Compare the composition of the moon's surface with the composition of the earth's surface.

Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .

Fredrick griffith made a scientific discovery in 1928