Microbodies are found in the cells of plants, animals, fungi, and protists. The distribution of enzymes into microbodies is one of the principal ways in which eukaryotic cells organize their metabolism.
Plant cells have a special type of microbody called a glyoxysome that contains enzymes that convert fats into carbohydrates. Another type of microbody, a peroxisome, contains enzymes that catalyze the removal of electrons and associated hydrogen atoms
Hydrogen peroxide is dangerous to cells because of its violent chemical reactivity. However, peroxisomes also contain the enzyme catalase, which breaks down hydrogen peroxide into harmless water and oxygen.