The water soluble materials pass through the proteins called

Options

A. Extrinsic proteins
B. Channel proteins
C. Spectrin
D. Glycoprotein

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the type of proteins that allow water-soluble materials to pass through.

2. **Identifying the Options**: The options provided are:
- A) Extrinsic protein
- B) Channel protein
- C) Spectrin
- D) Glycoprotein

3. **Analyzing Each Option**:
- **Extrinsic Protein**: These proteins are located on the surface of the cell membrane and do not facilitate the passage of water-soluble materials.
- **Channel Protein**: These proteins form channels in the cell membrane that allow specific substances, including water-soluble materials, to pass through. This is the key function we are looking for.
- **Spectrin**: This is a type of cytoskeletal protein that provides structural support to the plasma membrane but does not facilitate the transport of water-soluble materials.
- **Glycoprotein**: These are proteins with carbohydrate groups attached, and while they play roles in cell recognition and signaling, they do not primarily function as channels for water-soluble materials.

4. **Selecting the Correct Answer**: Based on the analysis, the correct answer is **B) Channel protein**. These proteins are specifically designed to allow the passage of water-soluble materials across the cell membrane.

5. **Conclusion**: Therefore, the water-soluble materials pass through the proteins called **channel proteins**.

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