Prokaryotes are single-celled organisms that lack a nucleus.
Bacteria and archaebacteria are prokaryotes.
Bacteria and archaebacteria are single-celled organisms that lack a nucleus.
Bacteria and archaebacteria examples of what?

  grass
  multi-celled organisms
  seeds
  Something that causes allergies
  major threat to health
  single-celled organisms
  microorganisms
  Food poisoning