A major site for synthesis of lipids is

Options

A. Nucleoplasm
B. RER
C. SER
D. Symplast

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:** The question asks for the major site of lipid synthesis in a cell. Lipids include fats, steroids, and cholesterol.

2. **Identifying the Options:** The options provided are:
- Nucleoplasm
- RER (Rough Endoplasmic Reticulum)
- SER (Smooth Endoplasmic Reticulum)
- Simplast

3. **Analyzing Each Option:**
- **Nucleoplasm:** This is the viscous fluid within the nucleus, primarily involved in the organization of genetic material and does not play a significant role in lipid synthesis.
- **RER (Rough Endoplasmic Reticulum):** This type of endoplasmic reticulum is studded with ribosomes and is mainly involved in protein synthesis, not lipid synthesis.
- **SER (Smooth Endoplasmic Reticulum):** This type of endoplasmic reticulum lacks ribosomes and is primarily involved in the synthesis of lipids, including fats, steroids, and cholesterol.
- **Simplast:** This term refers to the interconnected cytoplasmic network in plant cells and is not specifically related to lipid synthesis.

4. **Conclusion:** Based on the functions of the endoplasmic reticulum, the Smooth Endoplasmic Reticulum (SER) is the major site for the synthesis of lipids.

5. **Final Answer:** The correct answer is **SER (Smooth Endoplasmic Reticulum)**.

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