Question

to study the actions of the enzyme catalase on hydrogen peroxide, students performed the following experiment. catalase was extracted from potatoes by blending raw potatoes in a with cold distilled water. the filtrate was stored on ice. the following hydrogen peroxide so were made: 1 percent, 5 percent, 10 percent, and 15 percent. filter paper disks were soake catalase filtrate and dropped into beakers containing the various solutions. the activity of t enzyme was measured by the amount of time it took for the disks to float to the surface of solution on the bubbles produced by the reaction. the following data were obtained.

hydrogen peroxide solution | average time, in seconds, for disks to float
1% | 30 sec
5% | 25 sec
10% | 20 sec
15% | 10 sec

if the potato solution was boiled for 10 minutes and cooled for 10 minutes before being average time for the disks to float to the surface of the hydrogen peroxide solution woul
30 sec
less than 1 sec
10 sec
more than 30 sec
clear my selection

Explanation:

Enzymes like catalase are proteins. Boiling denatures proteins, making the enzyme inactive. Without an active enzyme to catalyze the decomposition of hydrogen - peroxide, the reaction rate will be extremely slow. So, it will take a long time for the disks to float.

Answer:

D. more than 30 sec