Which statement must be mentioned in explaining why amphipathic molecules line up at a water surface? which statement must be mentioned in explaining why amphipathic molecules line up at a water surface?
a. nonpolar groups repel water.
b. nonpolar groups attract one another.
c. polar groups attract one another.
d. polar groups repel water.
e. all of the above.

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.