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The Endoplasmic Reticulum Train Let's hop on the ER Train..... http://www.congenjamaica-ny.org/Sitepics/train.gif 3D Illustration of the ER Train Route http://image.shutterstock.com/display_pic_with_logo/740515/740515, 1304148170,19/stock-photo-endoplasmic-reticulum-76232059.jpg Microscopic Image of the ER Train Route The ER Train Stops and Functions ● Ribosomes- build amino acid chains which are pushed into Rough ER ● Rough ER- Synthesizes and packages proteins ● Smooth ER- Makes lipids, metabolizes carbohydrates, and detoxifies the cell from drugs and poison http://www.desktopclass.com/wpcontent/uploads/2011/09/endoplasmic-reticulum-533x400.jpg More About the ER Train Stops and their Functions ● Ribosomes- Stick to the Rough ER like leeches and build amino acid chains ● Rough ER- A series of flattened sacs that look like sheets covered with ribosomes. They help it synthesize and package proteins. When the protein is complete it pinches of a vesicle. That vesicle moves to the cell membrane or golgi apparatus ● Smooth ER- A network of tubes that lack ribosomes. The smooth ER makes lipids, metabolizes carbohydrates, and detoxifies the cell from drugs and poison. Endoplasmic Reticulum Analogy The endoplasmic reticulum is like a train route because it transports the proteins and lipids manufactured in the different parts of the organelle to other parts in the cell. The ribosomes, rough ER, and smooth ER act as the train stops where the product (lipids and proteins) is manufactured. General Function of the ER Train Route The endoplasmic reticulum manufactures lipids and proteins. It then transports them to other parts of the cell. It also metabolizes carbohydrates and detoxifies the cell from drugs and poison.