The two enzymes that help in the generation of NADPH which is essential for fatty acid synthesis are the Glucose-6-phosphate-dehydrogenase(G6PDH) and the Malic enzyme.
NADPH is predominantly produced by the pentose phosphate pathway, either directly by the malic enzyme as it oxidized malate to pyruvate or indirectly through the glucose-6-phosphate dehydrogenase.
NADP+ is used to make NADPH. The pentose phosphate pathway, which is catalyzed in the first stage by glucose-6-phosphate dehydrogenase (G6PDH), is the main source of NADPH in mammals and other non-photosynthetic organisms.
From glucose, the pentose phosphate pathway also generates pentose, a crucial component of NAD(P)H.
However, the Entner-Doudoroff route is also used by some bacteria, and NADPH generation is unaffected.
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Lactic acid is the result of fermentation. Fermentation is when there is a lack of oxygen but youre body is still trying to get you enough ATP molecules (energy) to function. It is the stuff that makes you sore lol
No system is closed off by it surroundings.
Do a cross graph with B and W