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biology 0610printed 56 · PDF 56
328 pagesrevision 46933
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56
Factor affecting Enzymes
Mainly affected by 2 factors
Temperature
pH
Temperature
Each enzyme has a particular temperature at which it works the best, such
temperature is known as optimum temperature.
If the temperature is very low than the optimum temperature, then the enzyme will be
inactive.
If the temperature is very low then the kinetic energy of both the enzyme and
substrate is very low, they are moving with less speed subsequently very less
collisions take place between the enzyme and the substrate so very products are
formed.
If the temperature is too high than the optimum temperature then the enzymes
become denature.It can not catalyze any more reactions.
Denaturation happens because the enzymes start to lose their shape so does the
active site. Through this way the shape of the active site is no longer complementary
with the shape of the substrate. So when substrate collides with the active site it does
not fix in nor does it bind with the enzyme. Through this way no product is formed.
pH
Each enzyme has a particular pH at which it works the best, such temperature is
known as optimum pH.
If the pH is very low than the optimum pH, then the enzyme will be become inactive.
If the pH is too high than the optimum pH then the enzymes become denature.It can
not catalyze any more reactions.
Denaturation happens because the enzymes start to lose their shape so does the
active site. Through this way the shape of the active site is no longer complementary
with the shape of the substrate. So when substrate collides with the active site it does
not fix in nor does it bind with the enzyme. Through this way no product is formed.