Anaerobic Respiration in animals and Plants www assignmentpoint
Anaerobic Respiration in animals and Plants www. assignmentpoint. com
Summary of ATP production ► Stage 1 and 2 release all the chemical energy in one molecule of glucose to make a total of 38 ATP molecules. 2 molecules ATP from glucose pyruvic acid 36 molecules ATP from pyruvic acid carbondioxide + water Total 38 molecules ATP www. assignmentpoint. com
Anaerobic Respiration (in animals) anaerobic = in the absence of oxygen www. assignmentpoint. com
In low oxygen conditions or during heavy exercise, when not enough oxygen can be supplied, muscle cells swap to anaerobic respiration www. assignmentpoint. com
glucose glycolysis still happens as it does not require oxygen 2 ADP + 2 Pi 2 ATP pyruvic acid in absence of oxygen pyruvic acid is turned into lactic acid www. assignmentpoint. com
A build up of lactic acid produces muscle fatigue. Muscle fatigue makes muscles ache and contract less powerfully. A recovery period is needed. During this time more oxygen is taken in to convert the lactic acid back into pyruvic acid again. The volume of oxygen needed is called the oxygen debt. www. assignmentpoint. com
Summary glucose pyruvic acid oxygen debt e. g. during hard exercise lactic acid www. assignmentpoint. com oxygen debt repaid during recovery time
Anaerobic Respiration in plants The same process occurs in plants and yeast in low oxygen conditions, e. g. muddy, flooded soils. www. assignmentpoint. com
glucose 2 ADP + 2 Pi glycolysis still happens, producing 2 ATP molecules 2 ATP pyruvic acid This time in absence of oxygen, pyruvic acid is turned into carbon dioxide and ethanol This is irreversible ethanol + carbon dioxide www. assignmentpoint. com
Comparison of aerobic and anaerobic respiration Anaerobic Respiration in animals in plants and yeast Oxygen required? yes no no Glycolysis occurs yes yes ATP yield 38 ATP 2 ATP Glucose completely broke down? yes no no End products Carbon Lactic acid dioxide and water www. assignmentpoint. com Ethanol and carbon dioxide
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