Prokaryotic Cells Flashcards
Define prokaryotic
Cells that lack a nucleus and other membrane bound organelle
What is genetic material in form of in a prokaryotic cell
Circular double stranded DNA
Bacteria cell wall are made of
Murein
What does the cell wall protect against
- mechanical damage
- osmotic lysis
Main roles of the cell wall
- Physical barrier
- protects
What is cell membrane made of
Phosolipids
Where is the cell surface membrane located
Inside the cell wall, encloses cytoplasm
Function of cell surface membrane
Differently permeable membrane, control entry and exit of chemicals
Function of ribosomes
Protein synthesis
Size of ribosomes
70s small and simple
Is the cell capsule found in every prokaryotic cell
No
What is the cell capsule a layer of
Mucilaginous slime around the cell wall
Name the 2 function of cell capsule
- Protects from other cell
- help bacteria stick together for protection
Function of flagellum
Used fo locomotion
What is DNA in bacteria cells NOT associated with
Protein