What are four differences between Archaea and Bacteria?

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jgeertz eNotes educator| Certified Educator

Prokaryotes can be divided into microorganisms called bacteria and archaea. Four differences between bacteria and archaea include:

1. Bacterial cell walls have peptidoglycan (mesh-like structure also known as murein); archaeal cell walls do not have peptidoglycan.

2. Bacteria have one ribosomal RNA polymerase (rRNA); archaea have three ribosomal RNA polymerase. In this respect archaea are similar to eukaryotes.

3.Bacteria cannot live above 100 degrees Celsius; archaea can thrive in extreme temperatures. Archaea are actually extremophiles. They can survive in extreme physical and geochemical conditions.

4. Bacterial growth is inhibited by antibiotics; archaeal growth is not inhibited by antibiotics.

thorsten1970 | Student

Differences were observed in the components of protein synthesis, cell wall structure, biochemistry (only archaea have methanogens) and resistance to environmental factors (most - extremophiles).