Question

The following is a scheme showing the fate of carbohydrates during digestion in the human alimentary canal. Identify the enzymes acting at stages indicated as A, B, C and D. Choose the correct option from those given below:

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A

B

C

D

Medium
Solution
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Correct option is D)

  • Amylase is an enzyme that catalyzes the hydrolysis of starch into sugars.
  • Lactase enzyme is found in the small intestine of mammals that catalyzes the breakdown of lactose (milk sugar) into the simple sugars glucose and galactose.
  • Maltase, an enzyme that catalyzes the hydrolysis of the disaccharide maltose to the simple sugar glucose.
  • For foods that include sucrose, invertase splits the sugar into its parts of glucose and fructose.
  • So, the correct answer is 'A=amylase, B=lactase, C=maltase, D=invertase".

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