Question

quiz! high temperatures, and ph changes can cause an enzyme to denature. what does this mean? a. it means that the enzyme will be completely destroyed. b. it means that the enzyme begins to work more effectively and efficiently. c. it means that the enzyme will fit new substrates and catalyze new reactions. d. it means the enzyme loses its shape and does not function.

Explanation:

To solve this, we analyze each option:

• Option A: Enzyme denaturation doesn't completely destroy it, just affects its structure, so A is wrong.
• Option B: High temp/pH changes harm enzyme function, not improve it, so B is wrong.
• Option C: Denaturation changes the active site, so it can't fit new substrates or catalyze new reactions, C is wrong.
• Option D: Denaturation causes the enzyme (a protein) to lose its specific 3D shape (including active site), so it can't function. This matches the definition of denaturation.

Answer:

D. It means the enzyme loses its shape and does not function.