Cell respiration is carried out by

Options

A. Mitochondria
B. Golgi bodies
C. Ribosomes
D. Chloroplasts.

Answer

**Step-by-Step Solution:**

1. **Understanding Cellular Respiration**: Cellular respiration is a metabolic process where cells convert nutrients into energy. This process involves breaking down a respiratory substance (like glucose) to produce ATP (adenosine triphosphate), which is the energy currency of the cell.

2. **Identifying the Organelle**: The question asks which organelle is responsible for carrying out cellular respiration. The options provided are mitochondria, Golgi bodies, ribosomes, and chloroplasts.

3. **Analyzing Each Option**:
- **Mitochondria**: Known as the powerhouse of the cell, mitochondria are the primary organelles where cellular respiration occurs. They are involved in both the Krebs cycle and the electron transport chain.
- **Golgi Bodies**: These are involved in modifying, sorting, and packaging proteins and lipids for secretion or delivery to other organelles. They do not play a role in cellular respiration.
- **Ribosomes**: These are the sites of protein synthesis and do not participate in cellular respiration.
- **Chloroplasts**: These organelles are involved in photosynthesis in plant cells, not in cellular respiration.

4. **Conclusion**: Since mitochondria are the organelles where cellular respiration occurs, the correct answer is mitochondria.

**Final Answer**: Mitochondria

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