BIO 3124 Lecture Notes - Lecture 7: Facultative Anaerobic Organism, Tomato Juice, Microaerophile
7 Dec 2016
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Greater nutritional complexity more nutrients for survival. More organisms can create nutrients on their own o o. Autotroph has greater nutritional capacity, lower biosynthetic capacity. Media is to allow greater growth of more organisms o o. Composed of rich and complex ingredients o o o o. Add ingredient which inhibits or kills growth of organisms on plate. O used to generate energy not anabolism. Oxygen is used as a final electron acceptor. Oxygen is use by bacteria which have an oxidative metabolism or perform aerobic respiration. Organisms have different optimal temperature mesophiles o o. Purpose change ph inside of the cell only. Excretion of acid or alkaline waste products o o. Select few of organisms try to change ph of environment. Living in biofilm can change ph of environment. Water activity aw measure of water availability more water available higher aw less higher aw o o. Lower favory of water entry inside of cell.
