Question:medium

The source of an enzyme is malt and that enzyme converts X into Y. X and Y respectively are

Show Hint

Remember the sequence of carbohydrate digestion: complex polysaccharides like Starch are broken down by amylase/diastase into disaccharides like Maltose, which are then broken down by enzymes like maltase into monosaccharides like Glucose. Malt is the primary source of diastase.
Updated On: Mar 26, 2026
  • Starch, maltose
  • Maltose, glucose
  • Proteins, peptides
  • Glucose, fructose
Show Solution

The Correct Option is A

Solution and Explanation

Step 1: Identify the enzyme from Malt: Malt (germinated barley) is the source of the enzyme Diastase.
Step 2: Identify the function of Diastase: Diastase catalyzes the hydrolysis of Starch into Maltose. Reaction: \( 2(\text{C}_6\text{H}_{10}\text{O}_5)_n + n\text{H}_2\text{O} \xrightarrow{\text{Diastase}} n\text{C}_{12}\text{H}_{22}\text{O}_{11} \) (Maltose).
Step 3: Check other options: - Maltose to Glucose is catalyzed by Maltase (found in yeast). - Proteins to peptides is catalyzed by Pepsin/Trypsin. - Glucose to Ethanol is Zymase. Therefore, X is Starch and Y is Maltose.
Was this answer helpful?
0