Download The Prokaryotes

3a - Prokaryotic Cells
What is it to be alive?
1) growth
What is it to be alive?
1) growth
2) capable of reproduction
What is it to be alive?
1) growth
2) capable of reproduction
3) responsiveness/irritability
What is it to be alive?
1) growth
2) capable of reproduction
3) responsiveness/irritability
4) perform metabolism
What is it to be alive?
1) growth
2) capable of reproduction
3) responsiveness/irritability
4) perform metabolism
5) made of cells
What is it to be alive?
1) growth
2) capable of reproduction
3) responsiveness/irritability
4) perform metabolism
5) made of cells
6) involved in evolution
Prokaryotes vs. Eukaryotes
size
organelles (including nucleus)
DNA
ribosomes
Sizes
Very large bacteria
Thiomargarita namibiensis
Common
prokaryotic cell
shapes
Fig. 11.1
Bacterial flagellum/a
Flagellar Arrangements
peritrichous
monotrichous
amphitrichous
lophotrichous
Bacterial movement by flagella
or swim &
twiddle
axial filaments made of
endoflagella
sheath
stalk
prostheca
peptidoglycan
Wall
Cytoplasmic/
plasma/cell
membrane
Why
organisms
make cells
walls
hopanoids
Cytoplasmic/plasma/cell membrane
Nitrosomonas: folded
membrane for respiration
Rhodospirillum: folded
membrane for photosynthesis
Passive
aquaporin
tonicity
Active Transport
Group
Translocation
cytoskeleton
Other
prokaryotic
internal
structures
(inclusions)
lipid
“Bt” toxin
carboxysomes
sulfur
magnetite
aka. gas
vacuoles
Endospore: sporulation