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5 July, 00:11

What is true of enzymes? They only speed up reactions. They speed up or slow down any reaction in a living thing. They act as catalysts, each for one specific reaction. They only slow down reactions

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  1. 5 July, 01:09
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    They act as catalysts
  2. 5 July, 02:04
    0
    There are 2 correct options for this problem.

    1) They only speed up the chemical reactions. : True

    Enzymes are biological catalysts. A catalyst lowers the activation energy of the reaction. When a reaction needs less energy to start, it occurs at a faster rate.

    Many biological reactions that occur in our body are occurring at body temperature. The reactions would become very slow at this temperature. Therefore enzymes act a catalyst to speed up these reactions.

    2) They act as catalysts, each for one specific reaction. : True

    This option is true because as discussed above, enzymes are catalyst and their job is to speed up a chemical reaction. Enzymes have active sites where a particular substrate can bind during the reaction. Therefore a given enzyme acts a catalyst for a specific reaction only.
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