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16

Nice question! Oxygen is actually not needed in the Krebs cycle - it is needed in the electron transport chain that is upstream of the Krebs cycle to regenerate NAD+ from NADH (see link). However, note that without O2 NADH accumulates and the cycle cannot continue as it needs NAD+ to run.


3

Would the body use this transferred fat for as energy, or would it ignore it as it wasn't stored there in the first place? It would use it as energy source, there is no such thing as "ignored tissue". Fatty acid mobilization is regulated by epinephrine and insulin. These are hormones which are ofc. carried by blood, so every white adipose (fat) tissue ...


1

It seems that there is no difference in the effects of chitosan on the uptake of saturated and unsaturated fatty acids. The study cited below (which has been done on guinea pigs) fed the animals a diet which contained different digestion-resistant fibers (maltodextrin, cellulose and chitosan) and also fats. Then the fatty acid content of the feces was ...


0

I am adding a supplement/concluding remarks to the existing answers. Some points to be considered: Electron transport chain can work without oxygen and can use other chemical species as electron acceptors. E.coli is capable of aerobic respiration, anaerobic (anoxic) respiration and fermentation (substrate level phosphorylation). How does E. coli ...


2

Iodine is naturally found in sea water and soil but it is not evenly distributed, with many areas in the world with low levels of iodine. Iodine accumulates naturally in fish, and plants growing in iodine-rich soil. Mammals that eat these plants get iodine from them, which then accumulates in the milk, making dairy and its products (e.g. cheese) another ...



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