BIOL 2004 Lecture 14: Chemotrophy
10 Mar 2017
School
Department
Course
Professor
Document Summary
Fundamental: cells need energy to be cells, and to grow - they need to harness chemical energy for growth. Gibbs free energy (g: g = h - ts, h = heat (enthalpy, bond energy, s = disorder (entropy, randomness, deltag = change in free energy = gproducts - greactants. Just know that this allows us to determine whether a reaction proceeds spontaneously or not. If g = a negative number, the reaction will proceed spontaneously. How do cells make atp: deltag is a very negative number - spontaneously made, this spontaneous reaction is exploited, and atp is produced. Just know that if deltag is negative, deltae is positive, and vice versa. Know that the units convert from chemical energy (deltag) to electrical energy (deltae: know this process produces electricity. Loss of electrons, oxidation = leo: gain of electrons, reduction = ger.
