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Rough Endoplasmic Reticulum (RER)
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Smooth Endoplasmic Reticulum (SER)
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1. Membrane covered with Ribosomes
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1. Membrane not covered with Ribosomes
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2. Found in cells which actively synthesize proteins. Eg., Enzyme cells
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2. Found in cells which are involved in the synthesis of non protein molecules. Eg.) Steroids, phospholipids
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3. Involved in protein synthesis
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3. Involved in other functions
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4. More stable
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4. Less stable
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5. Found in Pancreatic Exocrine cells
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5. Found in Epithelial cells, Intestinal cells, Sarcoplasmic Reticulum
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