What is the inner layer of a bacterial cell called?
cell surface/plasma membrane
What is the middle layer of a bacterial cell called?
cell wall
What is the outer layer of a bacterial cell called?
capsid protection
What is the cell wall made from?
peptidoglycan - only in prokaryotes
What do plasmids do?
circular loops of DNA
- they have genes on to help antibiotic resistance ( prokaryotes can share these genes)
What is free chromosomal dna ?
- chromosome/nucleoid
- free in cytoplasm
What are pilli?
- hair like structures
- role in movement
-adherence to surfaces
What are the ribosomes in prokaryotes called?
70S ribosomes
What do prokaryotes not have?
- membrane bound organelles (chloroplasts,mitochondria)
- histones
-nucleus
What is the endosymbiosis theory and what evidence supports this theory?
-Theory—-> organelles (chloroplasts and mitochondria) were once free-living prokaryotic cells
- mitochondria and chloroplasts have:
Circular DNA, No histones, 70S ribosomes, very small like bacteria
