Prokaryotic cells Flashcards
prokaryotes
prokaryotic cells are small, single, simple cells that lack a nucleus
Archaea
are older organisms that developed along the same time as eukaryotes
Bacteria
are primitive single called organisms that predate both archaea and eukaryotes and are more genetically different from the two.
outer capsule and cell wall
Prokaryotic cells have both an outer capsule and a cell wall to help provide structure
and support.
The outer capsule is also known as a ¨slime layer¨
The cell walls of prokaryotic cells is made of peptidoglycan
Peptidoglycan is made of sugars
cell membrane
This membrane is selectively permeable which means it allows some substances in, and keeps other substances out
Cytoplasm
Gel like substance found throughout the cell
Appendages
50% of all prokaryotes have a flagellum
The flagellum looks like a tail and acts as a propellor to help cell move
Pilli and fimbriae are hair like appendages or outer surface of the cell that aid in movement and the transfer of genetic information