Amino acid side chains (R groups)with what characteristic(s)dissolve best in water?
A)small sizes and simple structures
B)at least one ring structure
C)polarity or charged structures
D)the presence of sulfur

Question

Quizplus · Accepted Answer

Amino acid side chains that are polar or charged dissolve best in water because they can readily form hydrogen bonds with water molecules. This includes side chains such as serine, threonine, lysine, arginine, aspartic acid, glutamic acid, and histidine. Sulfur-containing side chains, such as cysteine and methionine, can also be polar but are not always charged and therefore may not dissolve as readily as some of the other polar or charged side chains. Small sizes and simple structures do not necessarily contribute to solubility in water, and the presence of at least one ring structure may actually decrease solubility due to decreased polarity or charge.

Amino Acid Side Chains (R Groups)with What Characteristic(s)dissolve Best in Water