The protons are combined with the electrons and oxygen…. O H H Pi Pi Pi A ….to form a molecule of water O H H Pi Pi Pi A In the absence of oxygen, there is a build up of hydrogen atoms H H H H H H H H H H H H Pi Pi Pi A The NADH/H+ and FADH2 will not be reoxidised as they will no longer be able to release the Hydrogen they are carrying H H H H H H H H H H H H Pi Pi Pi A H+ H+ H+ H+ H+ H+ H+ H+ The NADH/H+ and FADH2 will not be reoxidised as they will no longer be able to release the Hydrogen they are carrying H H H H H H H H H H H H Pi Pi Pi A NAD H H H+ H+ H+ H+ H+ H+ H+ H+ This means that respiration cannot proceed beyond the first stage – glycolysis. H H NAD H H H H H+ H+ H H H H H H H H Pi Pi Pi A H+ H+ H+ H+ H+ H+ This means that respiration cannot proceed beyond the first stage – glycolysis. This means that respiration cannot proceed beyond the first stage – glycolysis. This means that respiration cannot proceed beyond the first stage – glycolysis. The pyruvate accepts hydrogen atoms from the NADH/H+ directly in animals This means that respiration cannot proceed beyond the first stage – glycolysis. The pyruvate accepts hydrogen atoms from the NADH/H+ directly in animals This means that respiration cannot proceed beyond the first stage – glycolysis. NAD H H+ The pyruvate accepts hydrogen atoms from the NADH/H+ directly in animals This means that respiration cannot proceed beyond the first stage – glycolysis. NAD H H+ The pyruvate accepts hydrogen atoms from the NADH/H+ directly in animals This means that respiration cannot proceed beyond the first stage – glycolysis. NAD H H+ The pyruvate accepts hydrogen atoms from the NADH/H+ directly in animals This means that respiration cannot proceed beyond the first stage – glycolysis. H H NAD The pyruvate accepts hydrogen atoms from the NADH/H+ directly in animals This means that respiration cannot proceed beyond the first stage – glycolysis. H H NAD The pyruvate accepts hydrogen atoms from the NADH/H+ directly in animals and forms lactic acid. This means that respiration cannot proceed beyond the first stage – glycolysis. H H NAD A considerable amount of energy is trapped in the lactic acid. This means that respiration cannot proceed beyond the first stage – glycolysis. In plants the pyruvate is first decarboxylated to release CO2 This means that respiration cannot proceed beyond the first stage – glycolysis. O C O In plants the pyruvate is first decarboxylated to release CO2 This means that respiration cannot proceed beyond the first stage – glycolysis. O C In plants the pyruvate is first decarboxylated to release CO2 O This means that respiration cannot proceed beyond the first stage – glycolysis. O C In plants the pyruvate is first decarboxylated to release CO2 O This means that respiration cannot proceed beyond the first stage – glycolysis. O C The 2C intermediate accepts the hydrogen atoms from NADH/H+ and forms ethanol O This means that respiration cannot proceed beyond the first stage – glycolysis. O C NAD H H+ The 2C intermediate accepts the hydrogen atoms from NADH/H+ and forms ethanol O This means that respiration cannot proceed beyond the first stage – glycolysis. O C NAD H H+ The 2C intermediate accepts the hydrogen atoms from NADH/H+ and forms ethanol O This means that respiration cannot proceed beyond the first stage – glycolysis. O C NAD H H+ The 2C intermediate accepts the hydrogen atoms from NADH/H+ and forms ethanol O This means that respiration cannot proceed beyond the first stage – glycolysis. O C NAD H H+ The 2C intermediate accepts the hydrogen atoms from NADH/H+ and forms ethanol O This means that respiration cannot proceed beyond the first stage – glycolysis. O C NAD H H+ The 2C intermediate accepts the hydrogen atoms from NADH/H+ and forms ethanol O This means that respiration cannot proceed beyond the first stage – glycolysis. O C NAD H H+ A considerable amount of energy is trapped in the ethanol O In animals the pyruvate is converted to lactic acid: Glucose In animals the pyruvate is converted to lactic acid: Glucose pyruvate In animals the pyruvate is converted to lactic acid: Glucose pyruvate lactic acid In animals the pyruvate is converted to lactic acid: Glucose pyruvate lactic acid In plants the pyruvate is converted to ethanol and carbon dioxide In animals the pyruvate is converted to lactic acid: Glucose pyruvate lactic acid In plants the pyruvate is converted to ethanol and carbon dioxide Glucose In animals the pyruvate is converted to lactic acid: Glucose pyruvate lactic acid In plants the pyruvate is converted to ethanol and carbon dioxide Glucose pyruvate In animals the pyruvate is converted to lactic acid: Glucose pyruvate lactic acid In plants the pyruvate is converted to ethanol and carbon dioxide Glucose pyruvate ethanol + CO2 This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. 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