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? Nonpolar groups repel water. Nonpolar groups attract one another.
Explanation: Amphipathic molecules line up at a water surface because the polar end of each molecule remains in contact with water grouping together, while the nonpolar ends are grouped by repelling water.
