He typical human adult uses about 160 g of glucose per day, 120 g of which is used by the brain. the available reserve of glucose (~20 g of circulating glucose and ~190 g of glycogen) is adequate for about one day. after the reserve has been depleted during starvation, how would the body obtain more glucose?

Oxidation of body fatty acids

Explanation:

Once energy reserve has been depleted during starvation, the body switches to FAT OXIDATION.

The oxidation of long chain fatty acids to acetyl-CoA is a central energy-yielding pathway.

The acetyl-CoA generated enters the CITRIC ACID CYCLE and finally the ELECTRON TRANSPORT SYSTEM yielding ENERGY in form of ATP.

So, during starvation energy utilization switches TO oxidation of fatty acids.

a- all cells come from pre-existing cells

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