Question

question 9 (1 point) quaternary structure describes the formation of protein sheets. the formation of helical shapes. the combination of two different folded chains. extensive branching. a form of denaturing into a linear string of amino acids.

Explanation:

The quaternary structure of a protein refers to the structure formed by the combination of two or more different folded polypeptide chains. Protein sheets are related to secondary - structure, helical shapes are also secondary - structure elements, extensive branching is not related to quaternary structure, and denaturing into a linear string of amino acids is the loss of structure.

Answer:

the combination of two different folded chains.