BIOB34H3 Chapter Notes - Chapter 8: Poikilotherm, Evolutionarily Stable Strategy, Anaerobic Glycolysis

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18 Nov 2016
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Chapter 8: aerobic and anaerobic forms of metabolism part 2. Redox-balance: a cell is in redox-balance for a compound if it possesses the ability to oxidize the compound as fast as it can reduce it. Therefore, etc and o2 provide the means of maintaining nad and fad redox-balance. To make atp without o2, a cell must have other means of maintain redox-balance so at least some. So(cid:373)e tissues ha(cid:448)e(cid:374)"t e(cid:448)ol(cid:448)ed those path(cid:449)a(cid:455)s, just like brain tissue, which succumbs quickly to low o2 levels. Anaerobic glycolysis requires a cell to have way of maintaining nad redox balance without o2. Nad is re-oxidized by giving its electrons to pyruvic acid, reducing it to lactic acid. Pyruvic acid then replaces o2 as the final electron acceptor. Ldh reduces pyruvic acid, so significant amounts of it must be synthesized to carry out anaerobic glycolysis.

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