Name the enzyme which helps in digestion of proteins in stomach.

Answer

**Step-by-Step Solution:**

1. **Understanding Protein Digestion**: The process of protein digestion begins in the stomach. Proteins are complex molecules that need to be broken down into smaller peptides and amino acids for absorption.

2. **Identifying the Enzyme**: The enzyme responsible for the digestion of proteins in the stomach is called **pepsin**.

3. **Inactive Form of Pepsin**: Pepsin is secreted in an inactive form known as **pepsinogen**. This is important because it prevents the enzyme from digesting the stomach lining itself.

4. **Activation of Pepsin**: Pepsinogen is activated to pepsin in the presence of hydrochloric acid (HCl), which is secreted by the stomach lining. The acidic environment is crucial for this activation process.

5. **Function of Pepsin**: Once activated, pepsin begins to break down proteins into smaller peptides, facilitating further digestion.

**Final Answer**: The enzyme that helps in the digestion of proteins in the stomach is **pepsin**.

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