fermentation a continuation of glycolysis. glycolysis label the steps of glycolysis you learned...
TRANSCRIPT
Glycolysis
• Label the steps of glycolysis you learned about yesterday
GLUCOSE2 Pyruvic AcidMolecules
2NADH
Anaerobic Respiration:Fermentation
• Fermentation begins with pyruvic acid formed from glycolysis if no oxygen is present.
• Two types of fermentation can depending on the type of organism
Pyruvic Acid
Alcoholic Fermentation occurs in yeasts (fungus) and bacteria
Lactic Acid Fermentation occurs in animals’ muscle tissue
Alcoholic Fermentation• Pyruvic acid combines with one of the high energy
NADH molecules formed from glycolysis• Ethyl alcohol, carbon dioxide and NAD+ are formed • The NAD+ is reused in glycolysis • The ethyl alcohol and CO2 have some uses to humans
Pyruvic Acid
NADHEthyl
Alcohol
CO2 NAD+
Brewing Beer• Beer has been created by humans for over 10,000
years. • The CO2 produced makes the beer slightly
carbonated
Making Bread• As the yeast in bread dough produces CO2 the
it rises.• The alcohol is present in the raw dough but
evaporates away as the bread is baked
Lactic Acid Fermentation
• Pyruvic acid is converted into lactic acid by using a NADH molecule created during glycolysis.
Pyruvic Acid
NADHLactic Acid
NAD+