Biology: Cellular Respiration and Metabolism

All the chemical recations in a cell/organism

to carry and supplt energy to the cell

1. Glycolysis (anaerobic) 3. Kerebs cycle 3. Electron transport Chain

- Glucose converted to Pyruvic acid. - ATP produced and released. - NADH produced from NAD+ and electrons and protons.

oxygen

Mitochondria ( matrix )

- pyruvic acid enters mitochondria and loses CO2 to form acetyl.- Pyruvic acid loses 2 electrons. -ATP produces. - NADH produced. - NADH broken down into electrons and proton. - Electons enter ECT or form with protons to make water.

carries high energy electrons and protons

release of energy requires oxygen

release of energy without oxygen e.g fermentation

Glycolisis occurs in cytosol

lactic acid or ethanol

C6H12O6 + 6O2 = 6CO2 + 6H2O

ADP +P