HUBS1403 Lecture Notes - Lecture 6: Facilitated Diffusion, Phosphorylation, Anabolism
31 Jul 2018
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Document Summary
All the chemical reactions occurring in cells and tissues of your body at any moment. Provide the energy needed to maintain homeostasis, metabolic turnover, also growth, maintenance and repair, secretion and contraction. Cells remain alive by controlling the types and rates of chemical reactions. The nutrient pool metabolism anabolism source of substrates for cells conserve materials for. I. e. to replace membranes, organelles, enzymes, structural proteins. Amino acids > lipids > carbohydrates i. e. carbohydrates are used as the primary energy source followed by lipids & proteins. Glucose must pass through the plasma membrane to be used by the cell. In most body cells, glut molecules (transporters) Insulin increases the insertion of glut4 transporters into the plasma membrane increasing the rate of facilitated diffusion. The cell captures and stores energy by production of atp. Transfer of phosphate group from substrate (e. g glyceraldehyde phosphate) to adp. 1x in each turn of krebs cycle. Energy used to pump h+ across inner mitochondrial membrane.
