Which aspect of phospholipids is most important to the formation of bilayers?
a) Their size is large, relative to cholesterol.
b) Their size is small, relative to fats.
c) They are amphipathic.
d) Their hydrocarbon tails can consist of fatty acids or isoprene subunits.
e) They are variable in the length and saturation of their fatty-acid tails.
Answer: C