What determines the functions of amino acids?
A) their molecular weight
B) their side chain
C) both molecular weight and side chain
D) neither molecular weight nor side chain

Question

Quizplus · Accepted Answer

The side chain, also known as the R group, determines the chemical properties and therefore the functions of an amino acid. The side chain can be polar, nonpolar, acidic, basic, or aromatic, which affects how it interacts with other amino acids and molecules in a protein. Molecular weight may contribute to the physical properties of an amino acid, but does not determine its function.

What Determines the Functions of Amino Acids