Biology 1002B Lecture Notes - Lecture 10: Electrochemical Gradient, Oxidative Phosphorylation, Archaea
12 Mar 2016
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2015-05-30 1:47 pm: what gave rise to eukaryotic cells, neither bacteria or archaea show any tendency towards morphological complexity, the paradox: if evolution is step wise and all you need is time. Why haven"t bacteria and archaea evolved: although prokaryotes can do some of these eukaryotes can do them all. What drove the evolution of eukaryotes: the earliest forms of life were anaerobic, they could do glycolysis and they could ferment stuff but they couldn"t do anything else, cyanobacteria came next, gave rise to oxygenic photosynthesis. Causes oxygen to become abundant: bacteria then evolved to aerobic respiration, evolution of life has a lot to do with acquiring energy and making. Its really about power (watts: the idea of using a proton gradient to do work evolved very early on, proton motive force (pmf) measured in mvolts . watts. The amount of energy in a gradient.
