Word Bank Temperature and pH levels outside the normal range can the tertiary structure of proteins. * 1 point This is a required question Phospholipids have a tails and heads. * 2 points The movement of water from an area of high concentration to an area of low concentration is called . * 1 point is the difference in concentration of a substance from one location to another. * 1 point Molecules that have the same the same chemical formula but differ in the structure of their atoms and chemical bonds are called. * 1 point This is a required question are long chains of monomers. * 1 point amino acids , ATP is needed to move a substance across the cell membrane. * 1 point is the movement of molecules in a fluid or gas from a region of high concentration to a region of low concentration. * 1 point A cell must use to move glucose across the membrane. * 1 point A(n) fat contains double bonds, while fats do not. * 2 points