This is not a function of the cell organelle which was named by Porter

Options

A. Protein synthesis
B. Lipid synthesis
C. Synthesis of cell wall materials
D. Synthesis of steroidal hormones

Answer

To solve the question, we need to identify which function is not associated with the cell organelle named by Porter, which is the endoplasmic reticulum (ER). The ER has two types: rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER).

### Step-by-Step Solution:

1. **Identify the Organelle**: The cell organelle named by Porter is the endoplasmic reticulum (ER).

2. **Understand the Functions of the Endoplasmic Reticulum**:
- **Rough Endoplasmic Reticulum (RER)**: Primarily involved in protein synthesis due to the presence of ribosomes on its surface.
- **Smooth Endoplasmic Reticulum (SER)**: Involved in lipid synthesis and the synthesis of steroidal hormones.

3. **Evaluate the Options**:
- **Option A: Protein Synthesis**: This is a function of the rough endoplasmic reticulum (RER). Therefore, this option is associated with the ER.
- **Option B: Lipid Synthesis**: This is a function of the smooth endoplasmic reticulum (SER). Therefore, this option is also associated with the ER.
- **Option C: Synthesis of the Cell Wall Material**: This is NOT a function of the endoplasmic reticulum. Instead, cell wall material is synthesized in the Golgi apparatus. Therefore, this option is the correct answer to the question.
- **Option D: Synthesis of Steroidal Hormones**: This is a function of the smooth endoplasmic reticulum (SER). Therefore, this option is associated with the ER.

4. **Conclusion**: The function that is NOT associated with the endoplasmic reticulum is the synthesis of the cell wall material, which is done by the Golgi apparatus. Thus, the correct answer is **Option C**.

### Final Answer:
The function that is not associated with the cell organelle named by Porter (endoplasmic reticulum) is **synthesis of the cell wall material**.

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