Friday, September 25, 2009

MICROBODIES (GLYOXYSOMES AND PEROXYSOMES) (Short Note)

In plant cell they are of following two types:

(1) Peroxysome: They are single membrane bounded microbodies that contain enzymes for transferring hydrogen atom to oxygen forming hydrogen peroxide (H2O2), a toxic molecule that is immediately broken down t water by the enzyme catalase. Peroxysome are abundant in cells that are metabolizing alcohol. Peroxysome are believed to help in detoxification of alcohol.

(2) Glyoxysome: They are another type of microbodes. Each glyoxysome has single layered bounding membrane enclosing fine granular stroma. Glyoxysome contain enzymes that can metabolize some of the molecules involved in Photosynthesis process and respiration through oxidation of fatty acid.

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