Similarities and differences of peroxisomes and lysosomes

Question

What are the morphological, functional and chemical similarities and differences among peroxisomes and lysosomes?

Answer 1

Similarities: Lysosomes and peroxisomes are small membranous vesicles which include enzymes and enclose residual substances from external or internal origin degrading them.

Differences: Lysosomes contain digestive enzymes (or hydrolases) which break substances to be digested into small molecules; peroxisomes include enzymes which degrade mostly long-chained fatty acids and amino acids and which inactivate toxic agents comprising ethanol; in peroxisomes there is the enzyme catalase, accountable for the oxidation of organic compounds through hydrogen peroxide (H₂O₂) and, whenever such substance is in excess, by the degradation of peroxide into water and molecular oxygen.