Cell Boundaries. I. Cell Membrane A. All cells are surrounded by a thin flexible barrier known as the cell membrane B. Cell membrane regulates what goes.
Bacteria and Viruses Chapter 19. 19-1 Bacteria Common name for all prokaryotes unicellular organisms without a nucleus Were all in Monera Eubacteria live.
Chapter 19 Bacteria and Viruses. I. Prokaryotes A.Prokaryotes: single-celled organisms that lack a nucleus 1. Eubacteria – walls contain peptidoglycan.
I. The Kingdom Protista
