Why is the Enzyme Catalase Important to the Survival of Bacteria

Question

Why is the enzyme catalase important to the survival of bacteria?
A) Catalase protects the cell from desiccation.
B) Catalase breaks down toxic hydrogen peroxide.
C) Catalase allows for growth in high salt concentrations.
D) Catalase aids in the transport of oxygen into the cell.

Accepted Answer

Catalase is important to the survival of bacteria because it breaks down toxic hydrogen peroxide, which is a byproduct of cellular respiration that can damage DNA and other cell components. By breaking down hydrogen peroxide into water and oxygen, catalase protects the bacteria from oxidative stress and makes it possible for them to continue producing energy through respiration.