A microorganism that does not have catalase or superoxide dismutase would find it difficult to live in an environment with
A)carbon dioxide.
B)oxygen.
C)high salt.
D)temperatures above 37°C.
E)high acidity.

Question

Quizplus · Accepted Answer

Catalase and superoxide dismutase are enzymes that allow microorganisms to resist the toxic effects of oxygen. Therefore, a microorganism that lacks these enzymes would find it difficult to live in an oxygen-rich environment, making choice B the correct answer.

A Microorganism That Does Not Have Catalase or Superoxide Dismutase