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14 March, 07:08

Why will the enzyme sucrase only act on sucrose and not bind to other disaccharides, such as maltose?

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  1. 14 March, 07:17
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    Answer: Because of its specificity.

    Sucrase is an enzyme that catalyzes the hydrolysis of sucrose to glucose and fructose.

    Explanation:

    Enzymes are substances that catalyze biological reactions. Enzymes are specific that is they have the ability to bind with a selected substrate to catalyze a particular reaction. They have active sites which are specifically made for the binding of a particular substrate to elicit catalysis. Sucrose is a disaccharide made up of a glucose and fructose joined together while maltose is a disaccharide made up of two glucose molecules. Therefore, maltose will not be able to bind to the active site of sucrase due to its structure.
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