What are the 5 metabolic processes?

The five core metabolic processes include glycolysis (glucose breakdown), Krebs cycle (energy extraction), oxidative phosphorylation (ATP production), beta-oxidation (fat metabolism), and protein synthesis (building molecules).

These biochemical pathways represent how your body converts food into usable energy and functional molecules.

Glycolysis initiates energy production by splitting glucose into pyruvate molecules, generating small amounts of ATP. This process occurs in cell cytoplasm and doesn't require oxygen, providing quick energy.

Krebs Cycle (citric acid cycle) takes pyruvate into mitochondria, systematically extracting electrons through a series of chemical reactions. This cycle produces electron carriers that fuel the next stage while releasing carbon dioxide as waste.

Oxidative Phosphorylation represents the metabolic powerhouse, using oxygen and electron carriers from the Krebs cycle to generate substantial ATP through the electron transport chain. This process produces most of your daily energy and requires efficient mitochondrial function.

Beta-Oxidation breaks down fatty acids into acetyl-CoA units that enter the Krebs cycle, allowing stored fat to fuel sustained activities. This process dominates during fasted states or prolonged low-intensity exercise.

Protein Synthesis (anabolic process) assembles amino acids into functional proteins enzymes, hormones, antibodies, and structural components like muscle tissue. This continuous process requires adequate protein intake and appropriate hormonal signals.

Important Notes:

• Glycolysis: First step in glucose metabolism, produces quick energy
• Krebs Cycle: Extracts electrons from fuel molecules
• Oxidative Phosphorylation: Main ATP production using oxygen
• Beta-Oxidation: Converts stored fat into usable energy
• Protein Synthesis: Builds functional molecules from amino acids