Final answer:
Cellular respiration is the biological process that converts glucose into ATP, the usable form of energy for cells, involving stages such as Glycolysis and the Krebs Cycle.
Step-by-step explanation:
The process that produces usable energy in cells is known as cellular respiration. This biochemical process involves a series of chemical reactions that break down glucose molecules and convert the energy stored in their chemical bonds into a form that cells can use.
The most common energy currency that cells use for this purpose is ATP (adenosine triphosphate). Cellular respiration happens in multiple stages, including Glycolysis, the Transformation of Pyruvate, the Krebs Cycle, and Oxidative Phosphorylation.
Through these stages, glucose and oxygen are transformed into carbon dioxide and water, and ATP is produced. This metabolic pathway is essential for supplying energy for all cellular activities, from muscle contraction to active transport across cell membranes.