Chapter 6 Notes

Chapter 6 Notes - Movement of Large Molecules Endocytosis-...

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Ingrid Shih BIO 1305-08 15 September 2010 Cell Membranes Fluid Mosaic Model 1. Not a static structure 2. Consists of Phospholipids bilayer 3. Proteins and carbohydrates act as recognition sites 4. Cholesterol Active Transport Uniporter- single substance comes through the transport protein Symporter- moves 2 different substances in the same direction Antiporter- moves 2 different substances in the opposite direction Primary Active Transport: the Sodium-Potassium pump ON the inside- 3 sodium ions will attach to a pump along with an ATP molecule and through phosphoralization the ATP changes into ADP and one phosphate is attached to the pump. Secondary Active Transport- does not directly involve energy, no direct coupling of ATP Involves the movement of sodium ions and a glucose molecule
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Unformatted text preview: Movement of Large Molecules Endocytosis- process of the movement into the cell- forms a vesicle Certain types of cholesterol will attached to a pit and enter into the cell 1. Phagocytosis- solids 2. Pinocytosis- cellular drinking Exocytosis- process of the movement out of the cell- already has a vesicle Other Membrane Functions Transform energy- certain membranes (e.g. mitochondria and chloroplasts) Organize chemical reactions- organizes the proteins involved in certain reactions Process information- in the sense that membranes have specific receptors and when a signal molecule binds to the site it will cause some change in the cell...
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This note was uploaded on 03/23/2011 for the course BIO 1305 taught by Professor Eldridge during the Fall '08 term at Baylor.

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