Cell Membrane

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Cell Membrane/ Electron Transport Chain / Biochemical Pathway 1. The cell membrane structure is vital to the life of the cell. The cell membrane is shaped as having a phosphate head at the very outer surface, and two fatty acid tails hanging from it. The membrane is double, so at the tip of the fatty acid tails, there are two more fatty acid tails attached to another phosphate head. This is what it looks like: The reason …

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showed last 75 words of 665 total
…is a high concentration of the end product, it binds with the allosteric site of enzyme #1, changing the shape of the active site of enzyme #1. Thus, reactant #1 can no longer bind with enzyme #1, effectively shutting down the entire process. When the cell needs more end-product, it removes the end-product from the allosteric site of enzyme #1, and reactant #1 can bind with enzyme #1 to form reactant #2, and so on. Thus, the biochemical pathway is back in business.