Video: Cellular Respiration Overview, Process & Source of Energy

Video Summary for Cellular Respiration

Cellular respiration is a multi-step process that transforms food into energy for organisms.

This vital process primarily occurs in the mitochondria, with the initial stage happening in the cytoplasm.

The main source of energy for cellular respiration is glucose, which serves as the primary fuel that kickstarts the entire process.

Through a series of complex reactions, cellular respiration produces adenosine triphosphate (ATP), the energy molecule used by our bodies.

The process involves three main stages:

• Glycolysis, which splits glucose into pyruvate
• The Krebs cycle (citric acid cycle), which creates carbon dioxide and NADH
• Oxidative phosphorylation, which uses NADH to produce water and more ATP

Each cell produces 32 molecules of ATP through cellular respiration, providing the energy needed for all biological functions.