Question

Why glucose is known as currency of energy?

Answer 1

Well, it is because it creates the currency of energy.

Explanation:

Glucose `(C_6H_12O_6)` is the main source of `"ATP"`, and is produced via two to three steps. If I recall correctly, in order, they are glycolysis, Krebs cycle, and then the electron transport chain `("ETP")`.

In glycolysis, glucose is broken down into pyruvate. It uses `2 \ "ATP"` molecules but yields four, so the total production is two energy molecules.

Then, Krebs cycle happens. The pyruvate is converted into another two `"ATP"`, six `"NADH"` molecules, four carbon dioxide molecules, and two `"FADH"`.

Finally, it goes to the electron transport chain, where redox reactions happen due to electrons from `"NADH"` and `"FADH"`. This makes a whopping `34 \ "ATP"`.