A)occur due to certain chemicals.
B)occur due to pH changes.
C)occur due to high temperature.
D)cause the protein to no longer function.
E)All of the choices are correct.

A)ions.
B)neutrons.
C)molecules.
D)polymers.

A)are considered hydrophilic.
B)are nonpolar.
C)carry a positive charge.
D)carry a negative charge.
E)are considered hydrophilic AND carry a positive charge.