Question

when a protein denatures, it will:
a.) stop functioning
b.) fold into a higher - functioning 3d shape
c.) increase in function
d.) speed up chemical reactions

Explanation:

Protein denaturation involves the disruption of the protein's native structure (secondary, tertiary, or quaternary). The function of a protein is highly dependent on its specific 3D shape. When denatured, the protein loses its functional shape. Options b (folding into a higher - functioning 3D shape) and c (increase in function) are incorrect because denaturation disrupts, not improves, function. Option d (speed up chemical reactions) is a function of enzymes (a type of protein) in their native state, not denatured ones.

Answer:

A. Stop functioning