* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Lesson
Survey
Document related concepts
Cyanobacteria wikipedia , lookup
Basal metabolic rate wikipedia , lookup
Citric acid cycle wikipedia , lookup
Oxygen toxicity wikipedia , lookup
Photosynthesis wikipedia , lookup
NADH:ubiquinone oxidoreductase (H+-translocating) wikipedia , lookup
Light-dependent reactions wikipedia , lookup
Photosynthetic reaction centre wikipedia , lookup
Biochemistry wikipedia , lookup
Lactate dehydrogenase wikipedia , lookup
Electron transport chain wikipedia , lookup
Metalloprotein wikipedia , lookup
Oxidative phosphorylation wikipedia , lookup
Evolution of metal ions in biological systems wikipedia , lookup
Transcript
THE FATE OF PYRUVATE 3 FATES OF PYRUVATE PRODUCED BY GLYCOLYSIS ANAEROBIC PATHWAYS LACTIC ACID FERMENTATION Occurs in humans & mammals Pyruvate into lactate to oxidize NADH Allows continuation of glycolysis Lactate responsible for stiff, sore muscles & fatigue ALCOHOL FERMENTATION Occurs in yeast, fungi, bacteria & plants Pyruvate becomes acetaldehyde Produces CO 2 Acetaldehyde into ethanol oxidizes NADH Allows glycolysis to continue VO 2 MAX Maximum volume of oxygen that body can consume during exercise ml/kg/min Oxygen consumption linearly related to energy expenditure VO 2 MAX Aerobic fitness – ability of heart, lungs & bloodstream to supply oxygen to cells during activity Average 20 mL/kg/min – 90 mL/kg/min OXYGEN DEBT Extra oxygen needed to catabolize lactate to CO2 & H2O Click ↑ PROKARYOTES Electron transport chains in plasma membrane Some use O 2 as final electron acceptor Other use sulfate, nitrate, iron ion as electron acceptors