If glucose is not the energy of the cell, what is? how does glucose relate to this?

Adenosine triphoshate(ATP) is the energy currency of the cell.

Explanation:

Glucose is the Stored energy which is formed by the Glycogen. At the time when the energy is required glycogen is converted into glucose while, ATP is the energy which is ready to use. In aerobic conditions, Glucose produces about 30 ATP molecules. ATP molecule consists of HIGH ENERGY PHOSPHATE BONDS which are broken down when energy is required.

ADP + inorganic phosphate (pi)forms ATP

the statement is true