Question

chitinase is an enzyme that breaks down the chitin molecules in the insect exoskeleton. the folding of the polypeptides in which the amino acids far away from each other bond in chitinase is an example of which level of protein structure?
primary
secondary
tertiary
quaternary

Explanation:

Primary structure is the linear sequence of amino - acids. Secondary structure involves local folding like alpha - helices and beta - sheets. Tertiary structure is the 3 - D folding of a single polypeptide chain where amino - acids far apart in the primary sequence may interact. Quaternary structure is the arrangement of multiple polypeptide chains. Since the question refers to the folding of a single polypeptide with amino - acids far apart bonding, it is tertiary structure.

Answer:

C. tertiary