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Endomembrane System. By: Patrick Kandalepas, Nate Cornell, Arpit Pathak, Nick R?????. The Endomembrane System. The endomembrane system transports proteins and is responsible for metabolic purposes in the cell. One can think of the endomembrane system as a warehouse and packaging center.
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Endomembrane System By: Patrick Kandalepas, Nate Cornell, Arpit Pathak, Nick R?????.
The Endomembrane System • The endomembrane system transports proteins and is responsible for metabolic purposes in the cell. • One can think of the endomembrane system as a warehouse and packaging center.
Endoplasmic Reticulum • The endoplasmic reticulum functions as the packaging system for the cell. • The ER contains many sacs and tubules that function to store proteins. • The membrane of the ER keeps these storage areas separate from the cytosol.
Endoplasmic Reticulum • Rough ER- Is rough because it has ribosomes attached to it. - Synthesize, transports proteins, and creates membranes • Smooth ER- Does not contain ribosomes. - Synthesize lipids and detoxifies poisons http://www.youtube.com/watch?v=faE3STnfIGs&feature=related
Golgi Apparatus • This is basically the warehouse of the cell. • It receives the products sent from endoplasmic reticulum, such as protein. • Here they are stored and revised and shipped out to other organelles in the cell.
The Golgi Apparatus is made up of flattened sacs and folds. These are used for storing the proteins sent from the ER.
Lysosomes (only in animal cells) • Lysosomes are used for digestion inside the cell. • Lysosomes use enzymes in order to digest macromolecules. • Lysosomes are made in the rough endoplasmic reticulum and then sent to the Golgi Apparatus. • Their three-dimensional shape protects them from destruction.
Vacuoles • Vacuoles are vesicles that are membrane-bounded. • They have different functions for different cells.
Contractile Vacuoles • They are found in freshwater protists. They regulate the amount of water inside the cell.
Central Vacuole • Plant cells contain a central vacuole. -Store harmful products that would be dangerous if in the cytosol. -Cell expands as it absorbs water. -May contain poisons to protect plant from predators.