During the process of digestion, the proteins present in food materials are hydrolysed to amino acids. The two enzymes involved in the process
Proteins`overset("Enzyme(A)")to" Polypeptides" overset("Enzyme (B)")to`
Amino acids, are respectively.

Options

A. Pepsin and Trypsin
B. Invertase and Zymase
C. Amylase and Maltase
D. Diastage and lipase

Answer

To solve the question regarding the enzymes involved in the digestion of proteins into amino acids, we can break it down into clear steps:

### Step-by-Step Solution:

1. **Understanding the Digestion of Proteins**:
- Proteins are large biomolecules made up of long chains of amino acids. During digestion, these proteins need to be broken down into smaller units for absorption.

2. **First Step: Hydrolysis of Proteins**:
- The first step in the digestion process involves the breakdown of proteins into polypeptides. This reaction is catalyzed by an enzyme. The enzyme responsible for this reaction is **Pepsin**. Pepsin is produced in the stomach and is active in acidic conditions.

3. **Second Step: Hydrolysis of Polypeptides**:
- The second step involves the further breakdown of polypeptides into individual amino acids. This reaction is catalyzed by another enzyme. The enzyme responsible for this reaction is **Trypsin**. Trypsin is produced in the pancreas and works in the small intestine.

4. **Final Answer**:
- Therefore, the two enzymes involved in the digestion of proteins are:
- **Enzyme (A)**: Pepsin (converts Proteins to Polypeptides)
- **Enzyme (B)**: Trypsin (converts Polypeptides to Amino Acids)

### Summary:
- **Proteins** → **Polypeptides** (Enzyme A: **Pepsin**)
- **Polypeptides** → **Amino Acids** (Enzyme B: **Trypsin**)