Starch `overset(X)to` Maltose `overset(Y)to ` Glu cose `overset(Z)to ` Ethyl alcohol , X, Y, Z in the above sequence are :

Options

A. Maltase , Invertase, Zymase
B. Diastase, Maltase, Zymase
C. Invertase, Maltase, Zymase
D. Pepsin, Zymase,invertase

Answer

To solve the question regarding the conversion of starch to ethyl alcohol through maltose and glucose, we need to identify the enzymes involved in each step of the process. Here’s the step-by-step solution:

### Step 1: Conversion of Starch to Maltose
- **Enzyme Used**: Diastase
- **Explanation**: Starch, a polysaccharide, is broken down into maltose, a disaccharide, by the enzyme diastase. Diastase is a type of amylase that catalyzes the hydrolysis of starch.

### Step 2: Conversion of Maltose to Glucose
- **Enzyme Used**: Maltase
- **Explanation**: Maltose is further hydrolyzed into glucose by the enzyme maltase. Maltase specifically acts on maltose to yield two molecules of glucose.

### Step 3: Conversion of Glucose to Ethyl Alcohol
- **Enzyme Used**: Zymase
- **Explanation**: Glucose is converted into ethyl alcohol (ethanol) through fermentation, which is catalyzed by the enzyme zymase. Zymase is a complex of enzymes found in yeast that facilitates the fermentation process.

### Final Sequence
- **X**: Diastase (for starch to maltose)
- **Y**: Maltase (for maltose to glucose)
- **Z**: Zymase (for glucose to ethyl alcohol)

### Conclusion
The correct sequence of enzymes X, Y, Z is:
- **X = Diastase**
- **Y = Maltase**
- **Z = Zymase**