Archaebacteria was separated from eubacteria by Carl Woese and was given a separate kingdom. They are different from bacteria in :

Options

A. Having photosynthetic forms
B. Lacking branched chain lipids
C. Lacking a peptidoglycan cell wall
D. Having teichoic acids

Answer

**Step-by-Step Solution:**

1. **Introduction to Archaebacteria and Eubacteria:**
- Archaebacteria, also known as Archaea, were classified as a separate kingdom by Carl Woese due to their distinct characteristics compared to Eubacteria (true bacteria).

2. **Cell Wall Composition:**
- One of the primary differences is in the composition of their cell walls. Archaebacteria lack peptidoglycan, which is a key component of the cell walls of Eubacteria. Instead, their cell walls are made up of different polysaccharides and proteins.

3. **Lipid Composition:**
- Archaebacteria have unique lipids in their cell membranes. They lack branched-chain lipids, which are typically found in Eubacteria. This difference in lipid structure contributes to their ability to survive in extreme environments.

4. **Survival in Extreme Conditions:**
- Archaebacteria are known to thrive in extreme habitats such as hot springs, salt lakes, and marshy areas. Their unique cell wall and membrane structures allow them to withstand harsh conditions that would be detrimental to Eubacteria.

5. **Photosynthetic Capabilities:**
- While some Eubacteria, like cyanobacteria, are photosynthetic, Archaebacteria do not have the same photosynthetic capabilities. This further distinguishes them from Eubacteria.

6. **Conclusion:**
- In summary, Archaebacteria differ from Eubacteria in their cell wall composition (lack of peptidoglycan), lipid structure (absence of branched-chain lipids), and their ability to survive in extreme environments.

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