Which of the following is present in acid insoluble fraction ?

Options

A. Glucose
B. Fructose
C. Alanine
D. Lipid

Answer

To determine which of the following is present in the acid insoluble fraction, we need to analyze the options provided: Moose, Reptose, Alanine, and Lipid.

### Step-by-Step Solution:

1. **Understanding Acid Insoluble Fraction**:
- The acid insoluble fraction consists of biomolecules that are not soluble in acidic conditions. These typically include larger biomolecules or macromolecules.

2. **Identifying Biomolecules**:
- Biomolecules can be classified into four major types: carbohydrates, proteins, lipids, and nucleic acids.

3. **Molecular Weight Consideration**:
- Biomolecules with a molecular weight greater than 1000 Daltons are classified as macromolecules and are generally found in the acid insoluble fraction.

4. **Analyzing the Options**:
- **Moose**: This is not a biomolecule; it is an organism.
- **Reptose**: This term is not commonly recognized in the context of biomolecules.
- **Alanine**: This is an amino acid with a molecular weight less than 1000 Daltons, so it is not part of the acid insoluble fraction.
- **Lipid**: Lipids can be considered as macromolecules and are known to be part of the acid insoluble fraction.

5. **Conclusion**:
- Among the provided options, Lipid is the only one that is present in the acid insoluble fraction.

### Final Answer:
**Lipid** is present in the acid insoluble fraction.

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