Bacteria lack

Options

A. Cell wall
B. Cell membrane
C. Ribosomes
D. Mitochondria

Answer

**Step-by-Step Solution:**

1. **Understanding Bacteria**: Bacteria are classified as prokaryotic organisms. This means they have a simpler cell structure compared to eukaryotic organisms.

2. **Cell Structure of Bacteria**: Prokaryotic cells, such as those of bacteria, do not have membrane-bound organelles. This is a key characteristic that distinguishes them from eukaryotic cells.

3. **Identifying Membrane-Bound Organelles**: Common membrane-bound organelles found in eukaryotic cells include mitochondria and chloroplasts. Since bacteria are prokaryotes, they do not possess these organelles.

4. **Specific Organelles Lacking in Bacteria**:
- **Mitochondria**: Bacteria lack mitochondria, which are responsible for energy production in eukaryotic cells.
- **Chloroplasts**: Bacteria also do not have chloroplasts, which are involved in photosynthesis in plants and some protists.

5. **Conclusion**: Based on the characteristics of bacteria, we can conclude that bacteria lack membrane-bound organelles, specifically mitochondria and chloroplasts.

6. **Final Answer**: Therefore, the correct answer to the question "Bacteria lack" is **mitochondria**.

---