Lipid molecules in the cell are synthesised by

Options

A. smooth endoplasmic reticulum
B. rough endoplasmic reticulum
C. Golgi apparatus
D. plastids

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where lipid molecules in the cell are synthesized.

2. **Identifying the Options**: The options provided are:
- A) Smooth Endoplasmic Reticulum (SER)
- B) Rough Endoplasmic Reticulum (RER)
- C) Golgi Apparatus
- D) Plastids

3. **Analyzing Each Option**:
- **Smooth Endoplasmic Reticulum (SER)**: The SER is primarily involved in lipid synthesis. It also plays a role in detoxifying drugs and poisons, especially in liver cells.
- **Rough Endoplasmic Reticulum (RER)**: The RER is associated with protein synthesis due to the presence of ribosomes on its surface. It is not involved in lipid synthesis.
- **Golgi Apparatus**: The Golgi apparatus is responsible for modifying, packaging, and transporting materials synthesized by the endoplasmic reticulum. It does not synthesize lipids.
- **Plastids**: Plastids are organelles in plant cells that contain pigments and are involved in photosynthesis and storage. They do not synthesize lipids.

4. **Conclusion**: Based on the functions analyzed, the correct answer is A) Smooth Endoplasmic Reticulum (SER), as it is the organelle responsible for the synthesis of lipid molecules in the cell.

**Final Answer**: Lipid molecules in the cell are synthesized by the Smooth Endoplasmic Reticulum (SER).

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