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Cell Energy: Cellular Respiration. Cellular Respiration. The process where stored energy is converted to a usable form. Oxygen and glucose are converted to carbon dioxide, water, and ATP. Cellular Respiration Equation. (Opposite of photosynthesis) O 2 + C 6 H 12 O 6 CO 2 + H 2 O + ATP
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Cellular Respiration • The process where stored energy is converted to a usable form. • Oxygen and glucose are converted to carbon dioxide, water, and ATP.
Cellular Respiration Equation • (Opposite of photosynthesis) O2 + C6H12O6 CO2 + H2O + ATP (oxygen) + (glucose) (carbon dioxide) + (water) + (energy)
Who performs cellular respiration? • All organisms!!!
Why is cellular respiration important? • Cellular respiration is the process organisms use to obtain energy from the food they eat. • Cells use the energy from cellular respiration for growth, repair, and maintenance.
Glycolysis (“Glucose-Breaking”) • Takes place in the cytoplasm • The glucose molecule is broken into two pieces. • Glucose is converted to pyruvic acid: this conversion produces 2 ATP molecules.
Aerobic Respiration • “Aerobic” means “with oxygen” • Oxygen is required for these processes to occur: it is the final acceptor of electrons • 34 ATP are produced • Krebs cycle & the electron transport chain.
MitochondrionThe “Powerhouse of the Cell” • Aerobic respiration takes place in the mitochondrion. • This is where most of the ATP is produced. • http://cyberbio.mit.edu:8001/esgbio/cb/org/mito.gif
Cellular Respiration: Pathways Glucose Glycolysis 2 ATP Without oxygen With oxygen Anaerobic Respiration (fermentation) Aerobic Respiration 34 ATP No additional ATP