KINE 2050 Lecture 12: BIO 1000 Lectures 12-14; Membranes and Transport
19 Jan 2018
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Components: lipid: most abundant, protein (integral or peripheral, carbohydrate on the outside linked to lipids (glycolipid) or protein (glycoprotein) What kind of cell is this? (photo above: single celled eukaryote, plant, animal has no cell wall and has ecm, fungus, bacterium, could be a,b,c,d. Inside organelle vs cytosol: maintain ion gradients. Regulates transport in and out of the cell (or organelle: involved in signalling, metabolism. Relay signals from outside to inside of the cell. Contain key enzymes for various metabolic reactions. Fluid mosaic model: membrane is both fluid and mosaic. Primarily because of properties of lipid: fluid and able to move rapidly. Most lipid can move rapidly laterally within the membrane. Primarily because of the diversity of protein types found in membrane. But there is diversity in lipid and carbohydrate as well. Unsaturated: contain at least one double bond so has kinks in structure. The number or if there are any double bonds.
