anaerobic respiration releasing the energy in glucose without oxygen fermentation and lactic acid...
TRANSCRIPT
Anaerobic RespirationReleasing the energy in glucose without
oxygen
Fermentation and Lactic Acid Formation
What is anaerobic respiration?
In some situations, oxygen is not available, so cells are forced to perform a second type of respiration which is anaerobic respiration.
Anaerobic respiration is not nearly as efficient as aerobic respiration.
Not only is anaerobic respiration less efficient, it produces more toxic waste products.
Aerobic versus Anaerobic Respiration:Energy Produced.
In aerobic respiration one molecule of glucose yields 36 ATP.
In anaerobic respiration one molecule of glucose yields only 2 ATP.
Aerobic versus Anaerobic Respiration:Wastes Products.
Aerobic respiration produces two waste products, CO2 and H2O. These wastes are not particularly toxic.
Anaerobic respiration produces either ethyl alcohol or Lactic Acid. These are much more toxic and can damage or kill cells in relatively low concentrations.
Anaerobic Respiration: Fermentation
Fermentation: The anaerobic conversion of sugar to carbon dioxide and alcohol by yeast
The reaction:
C6H12O6 CH3OH + CO2 + 2 ATP
Glucose Ethyl Alcohol + Carbon Dioxide + 2ATP
Fermentation
Fermentation is a commerically important chemical reaction.
All Alcohol beverages are the result of this process.
As the alcohol level increases to about %13 percent, the yeast are killed by the alcohol.
Anaerobic Respiration: Lactic Acid Formation
In working muscles the level of available oxygen can drop dramatically.
This forces your muscle cells to begin anaerobic respiration.
The formulaGlucose Lactic Acid + 2 pyruvate + 2ATP.
You do not need to know the molecular formula for lactic acid formation.
Lactic Acid formation
Lactic acid is toxic to your cells The “burn” you feel during strenuous exercise is
caused by the build up of lactic acid in your muscle cells.
The burning and cramping continue to build until you are forced to stop exercising.
These symptoms continue until your circulatory system is able to provide these cells with oxygen and carries the lactic acid away.