Question

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

Explanation:

The secondary structure of a protein involves local folding of the polypeptide chain due to hydrogen - bonding between nearby amino acids. The description of amino acids near each other bonding in chitinase fits the concept of secondary structure. The primary structure is the linear sequence of amino acids, the tertiary structure is the overall 3 - D shape from interactions between distant amino acids, and the quaternary structure involves the association of multiple polypeptide chains.

Answer:

secondary