do anaerobic bacteria have catalase
Answers. Best Answer: Anaerobic bacteria don't have catalase and thats why they need to stay away from O2. They aren't able to work with molecules like H2O2 which is toxic for us and for them as well.Just we have catalase that breaks down H2O2 and this allows us to protect our cells. Also aerobic bacteria have it. think I have the right answer, but wanted to be sure before my test. My answer to both is no. The reason they don&#39;t require catalase is because its end product is O2 which can be harmful to an anaerobic bacteria. As for oxidase, I&#39;m not sure....any help would be appreciated.