Peroxisomes are small, membrane-bound organelles found in the cells of many eukaryotic organisms. They play a crucial role in lipid metabolism and the detoxification of harmful substances. Peroxisomes contain enzymes that break down fatty acids and amino acids, converting them into energy and other useful molecules. Additionally, peroxisomes are involved in the breakdown of hydrogen peroxide, a toxic byproduct of cellular metabolism. They contain the enzyme catalase, which converts hydrogen peroxide into water and oxygen, helping to protect the cell from oxidative damage. Overall, peroxisomes are essential for maintaining cellular health and function.