Question

1. rennin is an enzyme that catalyzes a reaction that solidifies milk. rennin was added to three different test tubes with milk. each test tube was placed in a water bath for ten minutes. the data collected during the experiment are shown.

which statement best explains the result of test tube 3?

the enzyme changed the product

the substrate was used up.

the enzyme was denatured.

the substrate reacted with the enzyme.

clear all

Explanation:

Enzymes are proteins that are sensitive to temperature. High temperatures (like in the hot water bath for test tube 3) can denature enzymes. Denaturation changes the enzyme's shape, preventing it from catalyzing the reaction (solidifying milk). In test tube 3, since there were no solids (no reaction occurred as in normal enzyme - substrate interaction), it's because the enzyme (rennin) was denatured.

Answer:

The enzyme was denatured.