BSCI 207 Lecture Notes - Lecture 9: Atp Synthase, Electrochemical Gradient, Chemiosmosis

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Bsci 207, dr. bretton kent - monday, september 17, 2018. Energy is a fundamental problem with origin of life. Bioenergetics- molecular mechanisms for extracting & manipulating energy to maintain internal order. Uses proton gradient to form atp- chemiosmosis. Works in reverse to establish proton gradient. Energy can be used to make proton gradients. Electron transport chains release energy in small, manageable amounts. Primary electron shuttle molecules- carry electrons between metabolic reactions & etc. All work on primarily the same system. Energy broken down only as far as electron acceptor can accept. Ions can sometimes add electrons to secondary shuttle molecules. Electron direction always depends on energy level of electrons. Can be used to make proton gradient. Can be used to make protein unstable to destroy.

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