Question

question 20 (1.7 points) which level of protein structure is most directly affected by tertiary structure primary structure secondary structure quaternary structure question 21 (1.7 points)

Explanation:

The primary structure of a protein is the linear sequence of amino - acids. It is the most fundamental level and mutations or changes in the genetic code directly affect this sequence. Secondary, tertiary, and quaternary structures are formed based on the primary structure through folding and interactions, but the initial change occurs in the primary structure.

Answer:

Primary structure