BIOL-M 250 Study Guide - Midterm Guide: Ftsz, Amine, Mreb
Document Summary
A variation of respiration for inorganic electron donors: some bacteria have evolved to eat electron rich inorganic molecules(h2: hydrogen gas, h2s: sulfide, fe2+:iron) Oxidization of inorganic energy sources to supply e- to etc. Commonly coupled to o2: weak energy source needs strong oxidant for max energy. Enzyme that reduces nadh by hydrogen gas direct reduction from nadh to nad+ Subsurface lithotropic microbial ecosystem(slime): chemolithoautotrophs require nothing but gases to grow. Understand how sulfide oxidation works. (reverse electron transport) Makes pmf from electron transport makes atp from f1f0atpase. Makes nadh by consuming pmf to add energy to electrons so that they can be added to nadh micro exam 3 page 1. Ex: sulfide oxidizing endosymbiotic bacteria- bacteria aerobically respire hydrogen sulfide to make energy and reduced carbon & share with tube worms. Act like chloroplasts(h2s instead of light: understand iron oxidation: one of most efficient processes.
