Question

the enzyme peroxidase is found in many organisms. it catalyzes the breakdown of hydrogen peroxide into water and oxygen gas. the rate of peroxidase activity at different ph values was assessed by students in the lab. the students results are shown in graph 1. graph 1. effect of ph on peroxidase activity if the experiment is repeated at ph 11, the observed activity level of the enzyme will most likely be a the same as the level at ph 7 b lower than the level at ph 9 c greater than the level at ph 9 d between the levels observed at ph 5 and ph 7

Explanation:

Enzymes have an optimal pH for activity. From the graph, peroxidase activity decreases as pH moves away from the optimal (around pH 5). Since pH 11 is more alkaline than pH 9 and outside the range of tested pH values where activity is declining, the activity at pH 11 will be lower than at pH 9.

Answer:

B. lower than the level at pH 9