MICRB265 Lecture Notes - Chorismic Acid, Ribose, Pentose
5 Oct 2013
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Bioenergetics: part ii: fermentation and respiration (con"t) | part. Alternative terminal electron acceptors (other than oxygen: called reductases. Facultative aerobes prefer oxygen as electron terminal acceptors but it is when o2 levels get low, reductase genes get turned on so that it can use an alternative terminal electron acceptor (ex. No3: less protons are pumped out in this way though. Electrochemical gradient formed during electron transport: as electron are passed on to the next carrier, more and more protons are pumped outside of the membrane. The plasma membrane is impermeable to protons. First discovered in mitochondria before its discovery in bacteria: channels take advantage of this proton concentration gradient; atpase created. Atp from adp and p from the natural in-flow of protons from the outside of the cell to the inside. Anabolism is the production of complex molecules from simpler ones (takes energy)
