Eubactetia is also called true bacteria.. archebactia grow in extreme harsh habitats.. Eubactetia are can't leave in that much of harsh habitats..

Introduction:

Eubacteria and Archebacteria are two domains of prokaryotes that constitute the vast majority of bacteria on Earth. Although they share some similarities, they also exhibit significant differences in their cellular structure, metabolic capabilities, and habitat preferences.

Differences between Eubacteria and Archebacteria:
1. Cell Wall Composition:
- Eubacteria possess a cell wall composed of peptidoglycan, a complex polymer of sugars and amino acids. This cell wall provides structural support and protection.
- Archebacteria have a different cell wall structure devoid of peptidoglycan. Their cell walls are made up of various complex polysaccharides and proteins, such as pseudomurein or glycoprotein S-layer.

2. Cell Membrane Lipids:
- Eubacteria have cell membranes made of phospholipids with ester linkages, which are sensitive to antibiotics and enzymatic degradation.
- Archebacteria, on the other hand, have cell membranes composed of branched isoprenoid lipids with ether linkages. These membranes are more stable and resistant to extreme conditions.

3. Habitat Preferences:
- Eubacteria are found in diverse habitats, including soil, water, and the bodies of plants and animals. They can be either beneficial or harmful to other organisms.
- Archebacteria are known to inhabit extreme environments with high temperatures, acidity, salinity, or pressure. They are commonly found in hot springs, deep-sea hydrothermal vents, and salt flats.

4. Metabolic Capabilities:
- Eubacteria exhibit a wide range of metabolic capabilities. They can be autotrophs, obtaining energy from sunlight or inorganic substances, or heterotrophs, relying on organic compounds for energy.
- Archebacteria are also metabolically versatile. Some are autotrophs, using chemosynthesis instead of photosynthesis, while others are heterotrophs. Additionally, some archebacteria can perform methanogenesis, a unique process of producing methane gas.

5. Sensitivity to Antibiotics:
- Eubacteria are generally sensitive to antibiotics commonly used in medical treatments, making them susceptible to antibiotic therapy.
- Archebacteria, due to their distinct cell membrane and metabolic pathways, are often resistant to antibiotics that target eubacteria.

Conclusion:
Eubacteria and Archebacteria are two distinct domains of prokaryotes with fundamental differences in cell wall composition, cell membrane lipids, habitat preferences, metabolic capabilities, and sensitivity to antibiotics. Understanding these differences is crucial for studying their ecological roles, evolutionary history, and implications in human health and biotechnology.