Biology · BIOLOGICAL CLASSIFICATION

Archaebacteria are capable of surviving under extreme harsh environmental habitats such as extreme salty areas (halophiles), hot springs (thermoacidophiles), and marshy areas (methanogens). What structural feature enables them to survive such extreme conditions?

1. Presence of proteinaceous pellicle replacing cell wall
2. Presence of a double-layered cellulosic cell membrane
3. Having a specialized different cell wall structure compared to other bacteria
4. Presence of silica deposits on their outer plasma membrane