Biology 4608G Lecture Notes - Post-Translational Modification, Equilibrium Constant, Photomorphogenesis
29 Apr 2013
School
Department
Course
Professor
Document Summary
Photoautotroph - use light to reduce carbon source. Metabolic pathways used to convert light are unique. Equilibrium constant (ke) tells us about the driving force of the reaction, doesn"t describe the mechanism of the reaction. Delta g - free energy of the reaction (energy available to do useful work) Delta g represents the driving force of the reaction. Living organisms have to remain far from equilibrium. A requires energy in because it is living - need energy to maintain homeostatic state. Need constant input on energy just to maintain homeostasis. Homeostasis - steady state flux of energy through the system. Any environmental condition that would tend to push an organism out of homestatic state. 13. 2 - any physiological process - respiration, photosynthesis. Rate of photosynthesis of a mature, healthy plant - constant rate (homeostatic) Impose a change in the environment (change temperature, remove nutrient) With time, rate of photosynthesis decreases - plant response to stress.
