Explain why polar and ionic R groups are hydrophilic.

Explanation:

They are hydrophobic. About 5 amino acids have polar side chains, R-groups which do not ionize or become positively or negatively charged. These R-groups are neither strongly hydrophilic nor hydrophobic. Atoms in long molecules, such as polypeptides, are not rigidly fixed in space or position

oak trees? ? what was listed

yes? sounds right, but you didn’t ask a question.