Question

1. why does denaturation affect enzyme activity? (1 point) * a) it increases the number of active sites b) it adds more amino acids to the enzyme c) it changes the enzymes shape and destroys its active site d) it makes the enzyme produce more energy

Explanation:

Enzymes are proteins with specific shapes. The active site (where substrates bind) is part of this shape. Denaturation (e.g., due to heat or pH changes) disrupts the protein's structure. If the active - site shape is altered, substrates can no longer bind effectively, thus affecting enzyme activity.

• Option a: Denaturation does not increase the number of active sites. In fact, it can destroy them.
• Option b: Denaturation does not add amino acids. Amino acids are part of the primary structure, and denaturation mainly affects higher - order (secondary, tertiary, etc.) structures.
• Option c: Correct. As explained above, denaturation changes the enzyme's shape and can destroy the active site.
• Option d: Enzymes lower activation energy but do not produce energy. Denaturation has no relation to energy production by the enzyme.

Answer:

C. It changes the enzyme’s shape and destroys its active site