MICRB265 Lecture Notes - Redox, Joule, Electrochemical Gradient
10 Apr 2014
School
Department
Course
Professor
Document Summary
Material is presented on energy flow and the laws of thermodynamics. The production of biologically useful energy is presented from an electrochemical perspective. Examples provided in lecture are not in the textbook, although additional information about calculating free energy can be found in the appendices of the textbook. Methane is used as an example since it is the simplest organic compound. First law: the total energy in a system remains constant. Energy can be neither created nor destroyed, but it may be transferred or redistributed from one state to another: e. g. a reaction. Energy that is consumed or released from the conversion of substrate a to product b can be expressed in: kcal: 1 kilocalorie is the amount of heat energy needed to raise the temperature 1oc in 1 kilogram of water. This unit is still used, particularly in nutrition.
