Which of the following statements about the cell membrane is FALSE? Select all that apply.
A. The cell membrane is mainly composed of phospholipids and proteins.
B. All materials can pass freely back and forth across the membrane.
C. Water will repel off of the surface of the cell membrane because the phospholipid heads are hydrophobic
D. The structure of the cell membrane is well-suited for maintaining homeostasis.

The fish shown above is a tarpon. it is a fast-swimming and powerful open-water fish. its closest relatives, oddly, are burrow-dwelling conger eels that stay on the bottom. both eels and tarpon developed from snake-like larvae that float in the plankton during the first stages of life. once they mature, tarpon and eels are not found near one another in the ocean. the tarpon and the eel illustrate all of the following except