Here's why:
* Peroxisomes are small, membrane-bound organelles found in the cytoplasm of eukaryotic cells.
* They are involved in a variety of metabolic reactions, including the breakdown of fatty acids, amino acids, and other molecules.
* One of their primary functions is the detoxification of harmful substances, including alcohol and reactive oxygen species (ROS).
* During this detoxification process, peroxisomes use enzymes like catalase to break down hydrogen peroxide (H2O2) into water (H2O) and oxygen (O2).
While H2O2 is a byproduct of peroxisome activity, it's important to note that it's also a highly reactive molecule that can damage cells. The presence of catalase ensures that H2O2 levels are kept in check, preventing oxidative stress.