Atlas of Plant and Animal Histology
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The cell. 6. Non vesicular.

NON VESICULAR

« Vacuoles Peroxisomes »

This section deals with peroxisomes, mitochondria, plastids, included chloroplasts, and lipid drops. Although mitochondria and plastids are able to synthesize proteins, all of these organelles need proteins which are synthesized in the cytosol. These organelles do not communicate with other organelles by vesicular traffic.

Peroxisomes are membrane-bound organelles with high metabolic activity related to oxidative reactions. Mitochondria and chloroplasts are delimited by two membranes and are major energy production centers in the eukaryotic cells. Oxidative phosphorylation is done in mitochondria to produce ATP, but other metabolic reactions are developed too. Chloroplasts are one type of the plastids, organelles found in plant cells. Photosynthesis is carried out by chloroplasts and transforms light into proton gradients to be used for ATP synthesis. Lipid drops, as well as some types of plastids, are storage organelles for lipids, proteins and carbohydrates. These organelles will be studied in the next pages.



« Vacuoles Peroxisomes »

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Updated: 13-03-2017. 14:06