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Oxygen & Cellular Respiration
Cellular respiration has 2 pathsAerobic
With oxygen present
Anaerobic without oxygen
present
Cellular Respiration
Anaerobic Aerobic
Glycolysis
Krebs Cycle
electron chain
Fermentation
Aerobic
If oxygen is present…Glycolysis runs
and the products are moved onto the Krebs cycle & the electron transport chain
AnerobicIf oxygen is not present…Glycolysis can
continue through the process of fermentation
2 typesLacticalcoholic
Lactic Acid Fermentation
Lactic acid fermentationUsed by most
organisms to produce ATP without the presence of oxygen
Alcoholic Fermentation
Alcoholic fermentationUsed by yeast
and some other microorganisms
This process is used to make alcoholic drinks
Fermentation and an oxygen debtLactic fermentation can only provide so much energy…After 90 seconds, oxygen must be
used to create more ATPThis is why you huff and puff after longer
exercises Your body is trying to get enough oxygen to
replenish ATP stores