Carbohydrate molecules attached to lipid and protein molecules from Glycocalyx (ex-traneous coat). These carbohydrates are usually

Options

A. monosaccharides
B. polysaccharides
C. oligosaccharides
D. starch

Answer

### Step-by-Step Solution:

1. **Understanding Glycocalyx**: Glycocalyx is a term used to describe the outer surface of animal cells. It is primarily composed of carbohydrate molecules that are attached to proteins (glycoproteins) and lipids (glycolipids).

2. **Identifying the Types of Carbohydrates**: The question asks about the type of carbohydrates that make up the glycocalyx. The options provided are:
- Monosaccharides
- Polysaccharides
- Oligosaccharides
- Starch

3. **Analyzing Each Option**:
- **Monosaccharides**: These are the simplest form of carbohydrates, consisting of single sugar units (e.g., glucose). They do not typically form the structure of glycocalyx.
- **Polysaccharides**: These are long chains of monosaccharide units (e.g., starch, glycogen). While they are important in energy storage, they do not directly describe the structure of glycocalyx.
- **Oligosaccharides**: These consist of a small number of monosaccharide units (usually 2 to 10). They are commonly found in glycocalyx as they can attach to proteins and lipids.
- **Starch**: This is a specific type of polysaccharide used for energy storage in plants and is not relevant to the structure of glycocalyx.

4. **Conclusion**: Based on the analysis, the carbohydrates that are typically found in glycocalyx are oligosaccharides, as they are specifically designed to attach to proteins and lipids, forming the structure of the glycocalyx.

5. **Final Answer**: The correct answer is **oligosaccharides**.