Biol1020-10.11-diffusion cont'd and cell respiration

Biol1020-10.11-diffusion cont'd and cell respiration - ♦...

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11 October 2006 Diffusion: Facilitated Diffusion Channel proteins- act as hydrated tunnels Aquaporins-special channel proteins Ion channel-also channel proteins Diffuses ions into and out of cells. Carrier proteins Binds to “substance in question” Glucose permease-protein in Red blood cells Once it enters the red blood cells, it is converted to “Glucose-Phosphate” Example is the thyroids: Contains a high concentration of iodine The iodine moves against the concentration gradient (from the bloodstream to the thyroids) This movement requires ATP energy Requires a carrier protein This is an example of active transport
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11 October 2006 Endocytosis: 3 kinds: Phagosytosis-“cellular eating” Pinocytosis-“cellular drinking” Same as phagocytosis except it takes up dissolved particles. Receptor-mediated endocytosis Uptake of specific substances at specific sites.
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Unformatted text preview: ♦ SEE PICTURE!! (LDL) ♦ Hypercholesterenia ♦ An inherited disease in which a bad receptor protein gene is copied ♦ Causes infected person to have fewer or no receptors because the receptors do not have a “tail” (see LDL picture to see function of tail) Cellular Respiration: How a cell breaks down food and captures and restores the released energy to make ATP. Catabolic reaction Redox reaction Exergonic reaction ♦ (notice the negative sign…) **the brain ONLY breaks down glucose to make its energy breathing vs. respiration= not the same!! Respiration: ♦ Glycolysis ♦ Citric Acid Cycle aka Krebs Cycle discovered by Hans Krebs 11 October 2006 ♦ Oxidative Phosphorylation: Electron transport system chemiosmosis...
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