Question

What's the difference between the way polysaccharides like glucose store energy and ATP?

Answer 1

The difference is in the type of bond in which the energy is stored. In ATP, the energy is primarily found in the high-energy phosphate bonds (P-O bonds). In glucose, it is found in several different kinds of bonds (e.g. C=O, O-H, etc).

Answer 2

Is its high-energy nature why ATP is predominantly used in the body?

Answer 3

Yes. The energy in glucose is used to produce ATP via glycolysis, the Krebs cycle, and the electron transport chain.

Answer 4

It is just another very important alternative to store energy in living things.