Question

Describe how sucrase catalyses the breakdown of sucrose. You should refer to fig 3.1 in your answer.

Answer 1

Answer:

Sucrose binds to the active site on sucrase, and this puts stress on the bond between the 2 sugars that make up sucrose. The bond breaks, releasing glucose and fructose.

Explanation:

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Answer 2

The sucrase catalyzes the breakdown of sucrose by the hydrolysis process of sucrose.

Explanation:

• Sucrase is a digestive enzyme that catalyzes the hydrolysis of sucrose to its subunits, fructose and glucose.
• The sucrase enzyme has two active sites.
• The substrate sucrose consists of glucose and fructose bonded together.
• The substrate binds to the active site of the enzyme and forms the enzyme-substrate complex.
• The water involves in the reaction and places stress on the glucose-fructose bond and breaks the bond.
• The two different products, glucose and fructose, are released and the enzyme is free to bind other substrates.