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Peroxisomes are small, round organelles enclosed by single membranes. They carry out oxidation
reactions that break down fatty acids and amino acids. They also detoxify many poisons that may enter the body. Alcohol is detoxified by peroxisomes in liver cells. A byproduct of these
oxidation reactions is hydrogen peroxide, ,
which is contained within the peroxisomes to prevent the chemical from causing damage to cellular components outside of the organelle. Hydrogen peroxide is safely broken down by peroxisomal
enzymes into water and oxygen.
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