BIOL 118 Lecture Notes - Lecture 5: Exergonic Reaction, Endergonic Reaction, Exergonic Process
18 Feb 2017
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Document Summary
Chapter 8- energy and enzymes: an introduction to. Two types of energy: kinetic, energy of motion, potential, stored energy. Chemical energy: potential energy of molecule depends on position of shared electrons, weak bonds with equally shared electrons = high pe, strong bonds with equally shared electrons= low pe. Chemical reactions involve energy transformation: exothermic- release of energy, endothermic- absorption of energy. Non-spontaneous reactions can be driven with chemical energy: couple a highly exergonic reaction with an endergonic reaction and the chemical released from one reaction will drive the other, exergonic = release of energy, endergonic= requires addition of energy. Redox reactions: atoms lose electron- oxidized, atoms gain electron- reduced, leo ger or oil rig, oxidation- exergonic, reduction- endergonic, oxidation and reduction reactions always occur together. Potential energy and redox: molecules that are oxidized. Energy carriers in the cell 2/15: flavin adenine dinucleotide (fad) Accepts 2 electrons and 2 protons to form fadh2: nicotineamide adenine dinucleotide.
