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Effect of temperature on enzymes
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Effect of temperature on enzymes
How does temperature affect enzyme activity?
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EFFECT OF TEMPERATURE ON ENZYMES
Enzyme action is greatly affected by temperature.
The
velocity of an enzyme
catalyzed reaction
increases with increase in temperature
upto the maximum and
then declines
.
An enzyme is active within a
narrow range
of temperature.
The temperature at which enzyme shows maximum activity is called as
Optimum Temperature.
If the temperature is increased by
10
°
C
, the rate of most chemical reactions is
doubled.
The range of
optimum
temperature is
25 - 40
°
C.
In general, when enzymes are exposed to temperatures
above 50
°
C
, it leads to
denaturation
of the enzymes. The tertiary conformation of enzymes is deranged and active sites are seen.
Majority of the enzymes become
inactive
at higher temperatures
above 70°C
.
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