Global warming and enzymes

Biology Unit 4

Global warming and enzymes

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Biology Unit 4
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Topic 5: On the wild side
16. Explain the effect of increasing temperature on
the rate of enzyme activity in plants, animals and
Temperature has an effect on enzyme activity which in turn affects the whole organism. A 10°C
increase in temperature will double the rate of an enzyme- controlled reaction. However there is an
optimum temperature for many enzyme-controlled reactions and if the temperature increases
beyond that point the enzyme starts to denture and the reaction rate falls.
As a result, increasing temperature could have different effects of processes, including the rate of
growth and reproduction. If a plant grows faster they will take up more carbon dioxide and may
therefore reduce atmospheric carbon dioxide levels. In other places, temperature may exceed the
optimum for some enzymes and organisms there will die.


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