Maximum substance in ribosome is :–

Options

A. RNA
B. ATP
C. NAD
D. NADPH

Answer

To determine the maximum substance in ribosomes, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Composition of Ribosomes**:
- Ribosomes are cellular structures responsible for protein synthesis. They are composed of various molecules, primarily proteins and ribonucleic acid (RNA).

2. **Identify the Main Components**:
- Ribosomes consist of two main components:
- Ribosomal RNA (rRNA)
- Ribosomal proteins

3. **Evaluate the Options Given**:
- The question provides several options to choose from regarding the maximum substance in ribosomes:
- **Option 1**: RNA
- **Option 2**: ATP
- **Option 3**: NAD
- **Option 4**: NADPH

4. **Analyze Each Option**:
- **Option 1 (RNA)**: This is correct. Ribosomes are primarily made up of rRNA, which is the most abundant substance in them.
- **Option 2 (ATP)**: This is incorrect. ATP (adenosine triphosphate) is a molecule that provides energy but is not a major component of ribosomes.
- **Option 3 (NAD)**: This is incorrect. NAD (nicotinamide adenine dinucleotide) is involved in redox reactions and energy metabolism, not a structural component of ribosomes.
- **Option 4 (NADPH)**: This is also incorrect. NADPH is primarily used in anabolic reactions and is not a component of ribosomes.

5. **Conclusion**:
- Based on the analysis, the maximum substance in ribosomes is **RNA**.

### Final Answer:
The maximum substance in ribosomes is **RNA**.

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