Question

protein function is lost or reduced when a protein is denatured. which of the environmental factors listed can cause protein denaturation? excessive heat extreme ph protein - digesting enzymes exposure to water

Explanation:

Excessive heat can disrupt protein - structure by breaking hydrogen bonds and other weak interactions. Extreme pH can alter the ionization states of amino - acid residues in proteins, leading to denaturation. Protein - digesting enzymes break down proteins into smaller peptides and amino acids, which is different from denaturation (changing the 3 - D structure without fully breaking the protein into its monomers). Exposure to water is a normal condition for proteins in biological systems and does not cause denaturation.

Answer:

excessive heat, extreme pH