How would you explain the connection between glucose entering the body and energy created by the body to a friend, using your new biochemistry knowledge?

The easiest way to explain to someone the process of glucose entering our body and energy created I would say is the explanation of cellular respiration. Cellular respiration is what cells do to break up sugars into a form that the cell can use as energy. This happens in all forms of life. Cellular respiration takes in food and uses it to create ATP, a chemical which the cell uses for energy. Regular cellular respiration is aerobic (requires oxygen). The aerobic process involves 3 parts:


Glycolysis
Citric Acid Cycle
Electron transport chain


Each of these parts has complexities all their own but all have the same product, ATP. Adenosine triphosphate is the main energy source for life and is continually needed and constantly created.