Changing a single amino acid in a protein consisting of 325 amino acids would ________.
A) alter the primary structure of the protein but not its tertiary structure or function
B) cause the tertiary structure of the protein to unfold
C) always alter the biological activity or function of the protein
D) always alter the secondary structure of the protein and disrupt its biological activity
E) always alter the primary structure of the protein, sometimes alter the tertiary structure of the protein, and sometimes affect its biological activity

Question

Quizplus · Accepted Answer

Changing a single amino acid in a protein can alter its primary structure, which can then affect the tertiary structure and biological activity depending on the location and significance of the amino acid change. Therefore, the answer is E since it covers all possible outcomes.

Changing a Single Amino Acid in a Protein Consisting of 325