Usefulness of Fermentation

Usefulness of Fermentation - in their environment...

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Usefulness of Fermentation Anaerobic exercise During vigorous exercise, oxygen is consumed faster than it is needed. Additional ATP energy is provided to the muscles by glycolysis and the result is a buildup of lactate in the muscles. When lactate builds up, the blood pH drops and the muscles fatigue. At rest, lactate is converted back to pyruvate (the oxygen debt is repaid). This is why you continue to breathe hard after you have finished running or rapid stair climbing. Yeast Yeast produce alcohol which accumulates in their environment. As the concentration of alcohol
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Unformatted text preview: in their environment increases, it becomes more and more toxic to them. Beer and wine have a maximum alcohol concentration because a higher concentration will kill the yeast cells. Evolution of Cellular Respiration Early cells probably fermented organic molecules in the oceans. Today, nearly all organisms show some form of fermentation which indicates that it evolved early in evolutionary history. Evolution typically operates by building upon or adding to what is already there. Aerobic respiration appears to have been added to fermentation....
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This note was uploaded on 11/10/2011 for the course BIOLOGY bi 101 taught by Professor - during the Fall '10 term at Montgomery.

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