Endoplasmic Reticulum

Endoplasmic Reticulum - Two Basic Types of Cells...

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Two Basic Types of Cells Endoplasmic Reticulum * Smooth endoplasmic reticulum * network of interconnected tubes void of ribosomes * continuous with rough ER * site of fatty acid, phospholipid, and steroid synthesis * in certain cells the enzymes within the smooth ER inactivates or detoxifies various chemicals (i.e., alcohol, pesticides, carcinogens) Ribosome * Small granules composed of ribosomal RNA and protein * sites of protein synthesis * are scattered throughout the cytoplasm and attached to ER * composed of 2 subunits Golgi Complex * a system of stacked flattened sacs (cisterns) with expanded areas at their ends * has golgi vesicles that cluster along the expanded edges of the cisterns * is the “shipping and receiving” dock for newly synthesized lipids and proteins * packages them into transport (secretory) vesicles that release the products to the external of the cell Lysosomes * membrane enclosed sacs formed the golgi complex that contains powerful digestive enzymes * used to foreign substances and organisms
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This note was uploaded on 01/29/2012 for the course SCIE SYG2000 taught by Professor Bernhardt during the Fall '10 term at Broward College.

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Endoplasmic Reticulum - Two Basic Types of Cells...

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