BIO 181 Lecture Notes - Potential Energy, Mitochondrion, Flavin Adenine Dinucleotide

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Has high potential energy, allows cells to do work. Involve transferring electrons from one atom to another. When an atom or molecule gains an electron, it is reduced. When an atom or molecule loses an electron, it is oxidized. During the reaction, electrons can be transferred completely from one atom to another. The reduced molecule gains a proton and has higher potential energy. The oxidized molecule loses a proton and has lower potential energy. Happens when glucose is oxidized through controlled redox reactions: change in free energy is used to synthesize atp from adp and pi. All organisms use glucose to build fats, carbs, & other compounds. Cells recover glucose by breaking down these molecules: glucose is used to make atp through either cellular respiration or fermentation. Starts after we eat food, idgest it, absorb nutrient molecules into bloodstream, & deliver those to cells. Later, we"ll see a similar process for breaking down fats or lipids.

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