Side chains are important to proteins because they
A) help determine protein shape AND are a source of energy for hydration reactions in the cell.
B) help determine the degree of solubility of the protein in water.
C) are a source of energy for hydration reactions in the cell.
D) form the peptide bonds that link amino acids to one another.
E) help determine protein shape AND help determine the degree of solubility of the protein in water.

Question

Quizplus · Accepted Answer

Side chains, also known as R-groups, can vary greatly in their chemical structure and properties. They play a crucial role in determining the overall shape and function of proteins. Additionally, certain side chains can interact with water molecules and affect the solubility of the protein in aqueous environments. Therefore, both options A and B are correct. However, option C is incorrect as side chains do not serve as a direct source of energy for hydration reactions in the cell. Option D is also incorrect as peptide bonds are formed between the amino group of one amino acid and the carboxyl group of another amino acid, and do not involve side chains.

Side Chains Are Important to Proteins Because They