Question

use the information below to answer questions 16 and 17. lactase is an enzyme that breaks down the sugar, lactose, into glucose and galactose. students carry out an experiment to determine how temperature affects this process. they set up three test tubes, each containing a solution of lactase and lactose. each test tube is kept at a different temperature: 5°c, 37°c, and 60°c. the students measure the amount of glucose in each test tube. 16. why did the concentration of glucose decrease at 60 degrees celsius? the students measure the amount of glucose in each test tube. test tube temperature (°c) glucose concentration (mg/dl) 1 5 5 2 37 45 3 60 20 the shape of the lactase active site remains the same. the shape of the lactase active site changes. the concentration of lactase increases. the concentration of lactase decreases.

Explanation:

Enzymes like lactase have optimal temperatures. At 60°C, lactase may denature, changing its active - site shape and reducing its ability to break down lactose into glucose.

Answer:

The shape of the lactase active site changes