The difference between these domains is that the cell wall of bacteria contains peptidoglycan, whereas the cell wall of archaea does not.
What are similarities and disssimilarities between archaea and bacteria?
- Archaea and bacteria are two types of microorganisms that fall into the category of prokaryotes.
- Archaea and bacteria are prokaryotes that lack membrane-bound organelles and cell nuclei. They are unicellular.
- Like bacteria, archaea do not have an inner membrane, but both have cell walls and use flagella to swim. Archaea differ in that their cell walls do not contain peptidoglycan and their cell membranes use ether-linked lipids as opposed to the ester-linked lipids of bacteria.
- Archaea were once classified as bacteria, but are now no longer classified as archaea because their biochemical and evolutionary histories were found to be different.
What do bacteria and archaea do?
Their role in biogeochemical cycles is essential, contributing to important ecosystem processes such as soil formation, maintenance and function. Bacteria and archaea are the only organisms that can obtain energy from redox reactions that do not involve carbon bonding.
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