Which of the Following is a Type of R Group

Question

Which of the following is a type of R group?
A) Hydrophobic
B) Hydrophilic
C) Acidic
D) Basic
E) All of these

Accepted Answer

All of these are types of R groups. R groups refer to the side chains of amino acids that vary in composition and properties. Hydrophobic R groups are nonpolar and do not interact with water, while hydrophilic R groups are polar and interact with water. Acidic R groups have a negative charge at physiological pH, while basic R groups have a positive charge at physiological pH.