Which of the following component is not digested by the gastric juice?

Options

A. Lipids
B. Carbohydrates
C. Proteins
D. None of these

Answer

To determine which component is not digested by gastric juice, we need to analyze the components typically involved in digestion in the stomach.

### Step-by-Step Solution:

1. **Understanding Gastric Juice**: Gastric juice is a digestive fluid produced in the stomach. It contains hydrochloric acid (HCl) and digestive enzymes such as pepsin, gastric lipase, and gastric amylase.

2. **Components of Gastric Juice**:
- **Pepsin**: This enzyme is responsible for the digestion of proteins. It is secreted as an inactive form called pepsinogen, which is activated in the acidic environment of the stomach.
- **Gastric Lipase**: This enzyme aids in the digestion of lipids (fats).
- **Gastric Amylase**: This enzyme helps in the digestion of carbohydrates, specifically starch.

3. **Analyzing the Options**:
- **Lipids**: Digested by gastric lipase, so they are not the correct answer.
- **Carbohydrates**: Digested by gastric amylase, so they are also not the correct answer.
- **Proteins**: Digested by pepsin, making this option incorrect as well.
- **None of the above**: This implies that all the components listed (lipids, carbohydrates, and proteins) are digested by gastric juice.

4. **Conclusion**: Since all the components listed (lipids, carbohydrates, and proteins) are digested by gastric juice, the correct answer to the question is **none of the above**.

### Final Answer:
**None of the above (all components are digested by gastric juice).**

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