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peroxisome

peroxisome A small organelle (a type of microbody) that is bounded by a single membrane and found in plant and animal cells. It contains enzymes that are involved in oxidation processes, some of which generate the highly toxic compound hydrogen peroxide (H2O2). Hence, peroxisomes are equipped with catalase, an enzyme that breaks down H2O2 into water and oxygen. Peroxisomes are the main site of fatty-acid oxidation in plant cells and also play a significant role in this regard in animal cells. They are responsible for neutralizing toxins absorbed from the blood, especially in cells of the liver parenchyma and proximal convoluted tubule of the kidney. In plants, peroxisomes detoxify certain by-products of photosynthesis and oxidize glycolate (produced by photorespiration) to glyoxylate, which can then be salvaged by a series of reactions involving mitochondria and chloroplasts as well as peroxisomes.

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"peroxisome." A Dictionary of Biology. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"peroxisome." A Dictionary of Biology. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/peroxisome-1

"peroxisome." A Dictionary of Biology. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/peroxisome-1

peroxisome

peroxisome A round or oval, membrane-bound organelle, 0.3–1.5 μm in diameter, that is found in numbers in most eukaryotic cells. Typically, it has a finely granular, relatively dense internal structure, and contains numerous enzymes associated with the production and degradation of peroxides, in particular the enzyme catalase. See also GLYOXYSOME.

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"peroxisome." A Dictionary of Plant Sciences. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"peroxisome." A Dictionary of Plant Sciences. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/peroxisome

"peroxisome." A Dictionary of Plant Sciences. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/peroxisome

peroxisome

peroxisome A round or oval, membrane-bound organelle, 0.3–1.5 μm in diameter, found in numbers in most eukaryotic cells. Typically, it has a finely granular, relatively dense internal structure, and contains numerous enzymes (particularly catalase) associated with the production and degradation of peroxides. See also GLYOXYSOME.

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"peroxisome." A Dictionary of Zoology. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"peroxisome." A Dictionary of Zoology. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/peroxisome-0

"peroxisome." A Dictionary of Zoology. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/peroxisome-0