BIOL-M 250 Chapter Notes - Chapter 2: Agar Plate, Petri Dish, Growth Medium
Document Summary
Organism that grows optimally at a ph below 5. 5. Organism that uses co2 as its main carbon source. Type of bacterial morphology characterized by a clear zone around a colony grown on blood agar. Supports microbial growth and composed of exact quantities of pure chemicals; generally used for specific experiments when nutrients must be precisely controlled. In a bacterial growth curve, stage in which cells multiple exponentially; log phase. Organism that prefers or requires a high salt (nacl) medium to grow. Microbe whose optimum growth temperature is between 25 c and 45 c. Simplest, most commonly used technique for isolating bacteria; a series of successive streak patterns is used to sequentially dilute an inoculum on the surface of an agar plate. Required in very minute amounts by all cells including cobalt, zinc, copper, molybdenum, and manganese. Disinfectant that is non-toxic enough to be used on skin. Treatment to reduce the number of pathogens to a level considered safe.
