change, alter, vary, modify mean to make or become different. change implies making either an essential difference often amounting to a loss of original identity or a substitution of one thing for another. changed the shirt for a larger size; alter implies a difference in some particular respect without suggesting loss of identity.
hydrophilic - having a strong affinity for water; tending to dissolve in, mix with, or be wetted by water. chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions.
All of the answers are correct. amphipathic means has both hydrophilic and hydrophobic chains and detergents have this property plus they form micelles which have a hydrophillic outer layer and a hydrophobic core needed to dissolve oily substances. The plasma membrane is a lipid bilayer made out of a double layer of phospholipids. The phospholipids incorporate a phosphate head that's hydrophilic (water-loving) and a pair of fatty acid tails that are hydrophobic (water hating). The heads face outwards and the tails face inwards making up the membrane.