🦠microbiology review

Prokaryote

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Prokaryotes are unicellular organisms that lack a membrane-bound nucleus and other organelles. They include bacteria and archaea.

5 Must Know Facts For Your Next Test

  1. Prokaryotic cells have a simpler structure compared to eukaryotic cells, with no nucleus or membrane-bound organelles.
  2. Their genetic material is located in a nucleoid region, which is not enclosed by a membrane.
  3. Prokaryotes reproduce through binary fission, a form of asexual reproduction.
  4. They can inhabit extreme environments, such as hot springs and salt lakes.
  5. The cell walls of prokaryotes are often composed of peptidoglycan (in bacteria) or pseudopeptidoglycan (in archaea).

Review Questions

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