* Glucose is a readily available fuel: Glucose is a simple sugar that's easily broken down and used by cells. It's a primary source of energy for most living organisms.
* Cellular processes require energy: All cellular processes, from protein synthesis and DNA replication to muscle contraction and nerve impulse transmission, require energy to occur.
* ATP is the energy currency: Cells use a molecule called adenosine triphosphate (ATP) as their primary energy currency. ATP stores and releases energy in a form that cells can readily use.
* Cellular respiration breaks down glucose: Through a process called cellular respiration, cells break down glucose into smaller molecules, releasing energy in the process. This energy is used to produce ATP.
In summary: Cells convert the energy from glucose into a usable form (ATP) to power the myriad of processes that keep them alive and functioning.
