Question

11/25 what happens when enzymes are heated to a high temperature? the enzymes die. the shapes of the enzyme are altered. the enzymes amino acid sequence changes. the enzymes remain the same

Explanation:

Enzymes are proteins with specific three - dimensional structures, including the active site structure. When heated to a high temperature, the process is called denaturation. Denaturation does not mean the enzyme "dies" (enzymes are not living organisms), so the option "The enzymes die" is incorrect. The amino acid sequence of an enzyme is determined by the genetic code and is not changed by high - temperature heating; so "The enzymes' amino acid sequence changes" is wrong. Also, high temperature affects the enzyme's structure, so "The enzymes remain the same" is incorrect. During denaturation, the secondary, tertiary, and quaternary structures of the enzyme (including the shape of the active site) are altered.

Answer:

B. The shapes of the enzyme are altered.