Maximum concentration of enzymes (69-70%) in a cell occur in

Options

A. Protein factory of cell
B. Power house of cell
C. Middle man of macromolecule factory
D. Abzymes

Answer

To determine where the maximum concentration of enzymes (69-70%) in a cell occurs, we can analyze the options provided:

### Step-by-Step Solution:

1. **Understanding the Question**:
- The question asks where the maximum concentration of enzymes, specifically 69-70% of the total enzymes in a cell, is found.

2. **Analyzing Option A - Ribosomes**:
- Ribosomes are known as the "protein factories" of the cell because they synthesize proteins.
- However, ribosomes primarily contain RNA and translation-related enzymes, but they do not account for 69-70% of the total enzymes in the cell.
- **Conclusion**: This option is incorrect.

3. **Analyzing Option B - Mitochondria**:
- Mitochondria are often referred to as the "powerhouse of the cell" because they are involved in energy production through processes like the Krebs cycle and electron transport chain.
- These processes require a significant number of enzymes to facilitate the numerous reactions that occur in mitochondria.
- It is noted that approximately 69-70% of the total enzymes in a cell are located in the mitochondria due to the high metabolic activity.
- **Conclusion**: This option is correct.

4. **Analyzing Option C - Macromolecule Factory**:
- This term is vague and does not specifically refer to a known cellular structure.
- It is likely referring to the processes of macromolecule synthesis, but it does not indicate a specific location where enzymes are concentrated.
- **Conclusion**: This option is incorrect.

5. **Analyzing Option D - Antibodies**:
- Antibodies are proteins produced by B cells and have variable regions that allow them to bind to specific antigens.
- While antibodies do have enzymatic activity in certain contexts, they do not represent a location within the cell where 69-70% of total enzymes are concentrated.
- **Conclusion**: This option is incorrect.

### Final Answer:
The maximum concentration of enzymes (69-70%) in a cell occurs in **Option B: Mitochondria**.

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