Biochemistry 2280A Lecture Notes - Lecture 11: Electron Affinity, Electron Transport Chain, Reduction Potential
20 Aug 2019
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What happens to o2 that we consume: it is exhaled as part of co2, it becomes part of newly formed h2o, it is used to reduce nad+ to nadh, a and b, b and c. Answer: b (oxygen helps oxidize nadh to nad+) The process of transferring electrons from one carrier to another to form atp. Cells use enzymes to oxidize nutrients (by transferring electrons), thereby releasing energy which is used to produce atp. Protein bound non-protein chemical vital for its function: metal ions, enzymes are released unchanged; coenzymes can be changed, coenzymes organic cofactor, often a reaction substrate (e. g. Coa: prosthetic group: tightly bound coenzyme (covalently bonded; can"t freely. The protein complexes in etc don"t get reduced as electrons move; rather they contain non- What drives electrons down the enzymatic series is the growing level of each carrier"s electronegativity (oxygen drives redox reaction, highest oxidizing agent; highest affinity for electrons) protein cofactors which receives the electron and reduce.
