Archaea and bacteria are both microorganisms that lack a nucleus and membrane-bound organelles. They are both unicellular and have relatively simple structures. However, archaea have distinct differences from bacteria. Archaea have different cell walls and membrane lipids than bacteria, and they can survive in extreme environments such as hot springs, deep-sea hydrothermal vents, and highly acidic or alkaline environments. Bacteria, on the other hand, have cell walls made of peptidoglycan and can be found in a much wider range of environments, including soil, water, and the human body.
