BIOL 102 Lecture Notes - Lecture 13: Exergonic Reaction, Homomeric, Chemical Reaction
29 Aug 2016
School
Department
Course
Professor
Document Summary
Metabolism: sum total of all chemical reactions that occur in organisms: chemical reaction depends on, direction, rate. Energy: ability to promote change: kinetic: movement (ex: motor protein walking along microtubule, potential: energy from structure/location/molecular bonds. Thermodynamics: energy being converted from one type to another: first law, law of conservation of energy, energy can"t be created or destroyed, second law, transferring energy causes entropy, change in free energy determines direction of chemical reaction. Enthalpy (total energy) = free energy + temperature entropy. Exergonic rxn: energy released (exit) - spontanious. Endergonic rxn: energy absorbed (enters) non-spontanious. Not high energy band: e- in free phosphate resonate. Breaking bonds don"t create energy energy is made available from formation of new products. Glucose + atp glucose phosphate + adp. Mass action ratio: ratio between product and reactant concentrations. Catalyst: speeds up rate of reaction without being consumed: enzymes: protein catalysts in cells.
