Which group of organelles is involved in synthesis of substances needed by cell ?

Options

A. Lysosome, vacuole, ribosome
B. Vacoule, RER, SER
C. Ribosome, RER, SER
D. RER, lysosome, vacuole

Answer

To answer the question "Which group of organelles is involved in the synthesis of substances needed by the cell?", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organelles**: The question provides several organelles as options: lysosome, vacuole, ribosome, rough endoplasmic reticulum (RER), and smooth endoplasmic reticulum (SER).

2. **Understand the Functions**:
- **Ribosomes**: These are the sites of protein synthesis in the cell. They translate messenger RNA (mRNA) into proteins, which are essential for various cellular functions.
- **Rough Endoplasmic Reticulum (RER)**: This organelle is studded with ribosomes and is primarily involved in the synthesis and transport of proteins.
- **Smooth Endoplasmic Reticulum (SER)**: This organelle is involved in the synthesis of lipids (fats) and detoxification processes.

3. **Evaluate the Options**:
- **Option 1**: Lysosome, Vacuole, Ribosome - Lysosomes are involved in digestion and waste removal, not synthesis.
- **Option 2**: Vacuole, RER, SER - Vacuoles are storage organelles, not primarily involved in synthesis.
- **Option 3**: Ribosomes, RER, SER - This option includes all three organelles that are directly involved in the synthesis of proteins and lipids.
- **Option 4**: RER, Lysosome, Vacuole - Again, lysosomes and vacuoles are not involved in synthesis.

4. **Select the Correct Group**: Based on the functions of the organelles, the correct answer is **Option 3: Ribosomes, RER, SER**. These organelles work together to synthesize proteins and lipids, which are essential substances needed by the cell.

### Final Answer:
The group of organelles involved in the synthesis of substances needed by the cell is **Ribosomes, Rough Endoplasmic Reticulum (RER), and Smooth Endoplasmic Reticulum (SER)**.

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