Answer:
The main carbohydrate fuel molecule burned by all living things is glucose.
Step-by-step explanation:
Glucose is a simple sugar that is a major source of energy for cells in the body. It is transported through the bloodstream and is taken up by cells, where it is broken down through a process called cellular respiration to produce ATP, the primary energy molecule used by the body. Glucose is the primary fuel for the brain and the nervous system, and it is essential for the proper functioning of all living organisms.