Give appropriate biological / technical terms for the following:
An enzyme released in inactive form and activated by hydrochloric acid.

Explanation

**Step-by-Step Solution:**

1. **Identify the Enzyme**: The question asks for an enzyme that is released in an inactive form and activated by hydrochloric acid. The enzyme we are looking for is related to the digestive process in the stomach.

2. **Understand the Inactive Form**: The inactive form of the enzyme is known as pepsinogen. It is secreted by the gastric glands in the stomach lining.

3. **Activation by Hydrochloric Acid**: Hydrochloric acid (HCl), which is also secreted in the stomach, plays a crucial role in converting pepsinogen into its active form, which is pepsin.

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