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Effect of temp. on cellular respiration

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Effect of temp. on cellular respiration

Postby rah8 » Sun Oct 05, 2008 4:57 pm

What effect does temperature have on cellular respiration rate? and why does this happen?
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Postby MisterATP » Sun Oct 05, 2008 5:21 pm

In anaerobic respiration, the energy released per mole of glucose under high temperatures is three times greater then under normal temperatures.I don't know what about aerobic respiration.
I don't get why it is so.
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Postby MichaelXY » Sun Oct 05, 2008 5:56 pm

One reason might be that respiration requires the use of enzymes, and enzymes have an optimal operating temperature.
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Re:

Postby MrMistery » Sun Oct 05, 2008 6:32 pm

MisterATP wrote:In anaerobic respiration, the energy released per mole of glucose under high temperatures is three times greater then under normal temperatures.I don't know what about aerobic respiration.
I don't get why it is so.


That is certainly not true. If the optimum temperature of the enzyme is bigger than the body temperature, turning up the temperature might make the reactions proceed faster, but certainly the same amount of amount of energy is released, and the same 2 ATP/glucose are produced. It's like driving a car: the really expensive purified fuel might get you better performance than the cheap water-containing one, but you still get to the same place.
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