The toxic effects of the byproducts of oxygen metabolism are mitigated by which of the following?
A) catalase
B) superoxide dismutase
C) lactase
D) two of the above

Question

Quizplus · Accepted Answer

Both catalase and superoxide dismutase are enzymes that mitigate the toxic effects of the byproducts of oxygen metabolism. Catalase breaks down hydrogen peroxide, which can be toxic to cells, into water and oxygen, while superoxide dismutase converts superoxide radicals into hydrogen peroxide and molecular oxygen. Lactase is an enzyme that breaks down lactose, a sugar found in milk, and is not involved in reducing the toxic effects of oxygen metabolism byproducts.

The Toxic Effects of the Byproducts of Oxygen Metabolism Are