Question

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?

Answer 1

Answer: Oxidation of body fatty acids

Step-by-step 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.

Answer 2

In humans, the major precursors from which glucose can be synthesized from are:

1. glycerol from triacylglycerols

2. glucogenic amino acids from protein.

3. Oxaloacetate formed from CO2

4. Pyruvate foem pyruvate carboxykinase

All there's are routes through which the body obtains glucose to replenish body glucose levels