Question

a student placed a mixture (that contains an enzyme) and milk into four 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.

test tube	variable	result
2	room - temperature water bath	semi - solid milk
3	hot water bath	no solids, only liquid milk

which statement best explains the result of test tube 3?

1. the enzyme changed the product.
2. the substrate was used up.
3. the enzyme was denatured.
4. the substrate reacted with the enzyme.

< back 8 of 19 +

Explanation:

Enzymes are proteins that catalyze chemical reactions. High - temperature (hot water bath) can cause enzymes to denature, losing their structure and function. In test tube 3 with a hot water bath, the enzyme likely denatured, preventing it from acting on the substrate (milk), resulting in no solids and only liquid milk.

Answer:

C. The enzyme was denatured.