The enzymes at location 'X' and 'Y' are respectively
` "Protiens " underset('X') rarr "Proteoses + peptoses" underset('Y') rarr " Dipeptids " `

Options

A. Chymotry and pepsin
B. pepsin and trypsin
C. Ptyalin and Pepsin
D. Trypsin and dipeptidase

Answer

To solve the question regarding the enzymes at locations 'X' and 'Y', we need to analyze the breakdown of proteins into smaller peptides.

### Step-by-Step Solution:

1. **Understanding the Process**: The question states that proteins are converted into "proteoses + peptoses" at location 'X', and these are further converted into "dipeptides" at location 'Y'.

2. **Identifying Enzyme 'X'**:
- The enzyme that breaks down proteins into proteoses and peptoses is **pepsin**.
- Pepsin is a digestive enzyme secreted by the stomach and is responsible for the initial digestion of proteins.

3. **Identifying Enzyme 'Y'**:
- The next step involves the conversion of proteoses and peptoses into dipeptides. This process is facilitated by the enzyme **trypsin**.
- Trypsin is secreted by the pancreas and acts in the small intestine, continuing the digestion of proteins into smaller peptides.

4. **Conclusion**:
- Therefore, at location 'X', the enzyme is **pepsin**, and at location 'Y', the enzyme is **trypsin**.
- The final answer is: **X = pepsin, Y = trypsin**.

### Final Answer:
- The enzymes at location 'X' and 'Y' are respectively **pepsin** and **trypsin**.