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