Cellular Secretion

Cellular Secretion - Cellular Secretion Ribosomes attached...

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Cellular Secretion Ribosomes attached to the rough endoplasmic reticulum function to produce proteins. Various chemical reactions may occur within the rough endoplasmic reticulum which modify the proteins. Vesicles pinch off of the rough endoplasmic reticulum, carrying the protein molecules to the golgi apparatus for further modification. The completed molecules are then packaged into vesicles by the golgi apparatus and move to the plasma membrane where they fuse with the plasma membrane, emptying their contents. Some vesicles such as lysosomes remain within the cell. Peroxisomes Some metabolic processes within cells require the removal of hydrogen (oxidation) from certain molecules. For example, the breakdown of fatty acids often involves the removal of hydrogen. Peroxisomes are vesicles that contain enzymes which remove hydrogen from (oxidize) a variety of different compounds and pass the hydrogen to oxygen, producing hydrogen peroxide (H 2 O 2 ). Hydrogen peroxide is toxic but the enzyme
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Cellular Secretion - Cellular Secretion Ribosomes attached...

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