prokaryotes
DESCRIPTION
For the IB Diploma Programme Biology Course.TRANSCRIPT
Image Hospital-associated MRSA by NIAID on Flickr httpflickrpa4RLq5
Stephen Taylori-Biologynet
Prokaryotes
Escherichia coli (E coli) httpenwikipediaorgwikiEscherichia_coli
ProkaryotesldquoBefore nucleusrdquo evolutionary precursors to eukaryotes
Cell structures animationhttpwwwwileycomlegacycollegeboyer0470003790animationscell_structurecell_structureswf
cell wall
plasma membrane
pili
ribosomes
flagella
mesosome
cytoplasm
nucleoid
Prokaryotic Cell Parts
Prokaryotic cell parts are not generally membrane-bound so we donrsquot refer to
them as organelles
Cell structures animationhttpwwwwileycomlegacycollegeboyer0470003790animationscell_structurecell_structureswf
cell wall protective protein-based coating (Gram + Gram -)
plasma membrane selectively permeable controls entry amp exit of materials to and from the cell pili attach to other bacteria for DNA transfer
ribosomes protein synthesis (transcription amp translation)
flagella whiplash-like motion causes movement
mesosome
cytoplasm contains enzymes for metabolic reactions
nucleoid closed-loop of bacterial DNA in a condensed area
Prokaryotic Cell Parts
Cell structures animationhttpwwwwileycomlegacycollegeboyer0470003790animationscell_structurecell_structureswf
mesosomes
Prokaryotic Cell Parts
These donrsquot really exist naturally as bacterial cell parts and could be an example of a paradigm shift in thinking
They were observed in some electron micrographs and thought to be in-folds of membrane used for division respiration or making cell wallshellip
hellip turns out they are an artifact of the preparation method for some electron microscope images
httpenwikipediaorgwikiMesosome
Past-paper question E coli TEM image
Image from IB Biology QuestionBank CDRom ndash get a copy here httpsstoreiboorgbiology
Identify these structures I II III IV
Calculate the magnification of the image
Past-paper question E coli TEM image
Image from IB Biology QuestionBank CDRom ndash get a copy here httpsstoreiboorgbiology
Identify these structures I Plasma membrane II Cell wall pili III Nucleoid IV Cytoplasm ribosomes
Calculate the magnification of the image1 Measure the scale bar in mm 2 Multiply x 1000 to convert to μm That is the magnification
How long is the bacterium
PROKARYOTESEPRODUCE
through
binary fissiontwo-parts splitting
PROKARYOTESEPRODUCE
through binary fissionThe closed-loop DNA of the bacterium
makes copies through semi-conservative DNA replication
New plasmids are pulled to opposing poles by the spindle fibres
The bacterium divides in two
httpwwwyoutubecomwatchv=gEwzDydciWc
How dirty is your phone httpwwwyoutubecomwatchv=4lmwbBzClAc
Prokaryotes divide by binary fission
Life cycle of E coli from httpenwikipediaorgwikiEscherichia_coli
A man got sick from E coli after eating old sausages
Hersquod contracted a porkaryotePhoto Sausages by Paul Hickman on Flickr (CC) httpflickrpbzcFSn
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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Escherichia coli (E coli) httpenwikipediaorgwikiEscherichia_coli
ProkaryotesldquoBefore nucleusrdquo evolutionary precursors to eukaryotes
Cell structures animationhttpwwwwileycomlegacycollegeboyer0470003790animationscell_structurecell_structureswf
cell wall
plasma membrane
pili
ribosomes
flagella
mesosome
cytoplasm
nucleoid
Prokaryotic Cell Parts
Prokaryotic cell parts are not generally membrane-bound so we donrsquot refer to
them as organelles
Cell structures animationhttpwwwwileycomlegacycollegeboyer0470003790animationscell_structurecell_structureswf
cell wall protective protein-based coating (Gram + Gram -)
plasma membrane selectively permeable controls entry amp exit of materials to and from the cell pili attach to other bacteria for DNA transfer
ribosomes protein synthesis (transcription amp translation)
flagella whiplash-like motion causes movement
mesosome
cytoplasm contains enzymes for metabolic reactions
nucleoid closed-loop of bacterial DNA in a condensed area
Prokaryotic Cell Parts
Cell structures animationhttpwwwwileycomlegacycollegeboyer0470003790animationscell_structurecell_structureswf
mesosomes
Prokaryotic Cell Parts
These donrsquot really exist naturally as bacterial cell parts and could be an example of a paradigm shift in thinking
They were observed in some electron micrographs and thought to be in-folds of membrane used for division respiration or making cell wallshellip
hellip turns out they are an artifact of the preparation method for some electron microscope images
httpenwikipediaorgwikiMesosome
Past-paper question E coli TEM image
Image from IB Biology QuestionBank CDRom ndash get a copy here httpsstoreiboorgbiology
Identify these structures I II III IV
Calculate the magnification of the image
Past-paper question E coli TEM image
Image from IB Biology QuestionBank CDRom ndash get a copy here httpsstoreiboorgbiology
Identify these structures I Plasma membrane II Cell wall pili III Nucleoid IV Cytoplasm ribosomes
Calculate the magnification of the image1 Measure the scale bar in mm 2 Multiply x 1000 to convert to μm That is the magnification
How long is the bacterium
PROKARYOTESEPRODUCE
through
binary fissiontwo-parts splitting
PROKARYOTESEPRODUCE
through binary fissionThe closed-loop DNA of the bacterium
makes copies through semi-conservative DNA replication
New plasmids are pulled to opposing poles by the spindle fibres
The bacterium divides in two
httpwwwyoutubecomwatchv=gEwzDydciWc
How dirty is your phone httpwwwyoutubecomwatchv=4lmwbBzClAc
Prokaryotes divide by binary fission
Life cycle of E coli from httpenwikipediaorgwikiEscherichia_coli
A man got sick from E coli after eating old sausages
Hersquod contracted a porkaryotePhoto Sausages by Paul Hickman on Flickr (CC) httpflickrpbzcFSn
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
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- Slide 16
- Slide 17
- Slide 18
-
Cell structures animationhttpwwwwileycomlegacycollegeboyer0470003790animationscell_structurecell_structureswf
cell wall
plasma membrane
pili
ribosomes
flagella
mesosome
cytoplasm
nucleoid
Prokaryotic Cell Parts
Prokaryotic cell parts are not generally membrane-bound so we donrsquot refer to
them as organelles
Cell structures animationhttpwwwwileycomlegacycollegeboyer0470003790animationscell_structurecell_structureswf
cell wall protective protein-based coating (Gram + Gram -)
plasma membrane selectively permeable controls entry amp exit of materials to and from the cell pili attach to other bacteria for DNA transfer
ribosomes protein synthesis (transcription amp translation)
flagella whiplash-like motion causes movement
mesosome
cytoplasm contains enzymes for metabolic reactions
nucleoid closed-loop of bacterial DNA in a condensed area
Prokaryotic Cell Parts
Cell structures animationhttpwwwwileycomlegacycollegeboyer0470003790animationscell_structurecell_structureswf
mesosomes
Prokaryotic Cell Parts
These donrsquot really exist naturally as bacterial cell parts and could be an example of a paradigm shift in thinking
They were observed in some electron micrographs and thought to be in-folds of membrane used for division respiration or making cell wallshellip
hellip turns out they are an artifact of the preparation method for some electron microscope images
httpenwikipediaorgwikiMesosome
Past-paper question E coli TEM image
Image from IB Biology QuestionBank CDRom ndash get a copy here httpsstoreiboorgbiology
Identify these structures I II III IV
Calculate the magnification of the image
Past-paper question E coli TEM image
Image from IB Biology QuestionBank CDRom ndash get a copy here httpsstoreiboorgbiology
Identify these structures I Plasma membrane II Cell wall pili III Nucleoid IV Cytoplasm ribosomes
Calculate the magnification of the image1 Measure the scale bar in mm 2 Multiply x 1000 to convert to μm That is the magnification
How long is the bacterium
PROKARYOTESEPRODUCE
through
binary fissiontwo-parts splitting
PROKARYOTESEPRODUCE
through binary fissionThe closed-loop DNA of the bacterium
makes copies through semi-conservative DNA replication
New plasmids are pulled to opposing poles by the spindle fibres
The bacterium divides in two
httpwwwyoutubecomwatchv=gEwzDydciWc
How dirty is your phone httpwwwyoutubecomwatchv=4lmwbBzClAc
Prokaryotes divide by binary fission
Life cycle of E coli from httpenwikipediaorgwikiEscherichia_coli
A man got sick from E coli after eating old sausages
Hersquod contracted a porkaryotePhoto Sausages by Paul Hickman on Flickr (CC) httpflickrpbzcFSn
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
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Cell structures animationhttpwwwwileycomlegacycollegeboyer0470003790animationscell_structurecell_structureswf
cell wall protective protein-based coating (Gram + Gram -)
plasma membrane selectively permeable controls entry amp exit of materials to and from the cell pili attach to other bacteria for DNA transfer
ribosomes protein synthesis (transcription amp translation)
flagella whiplash-like motion causes movement
mesosome
cytoplasm contains enzymes for metabolic reactions
nucleoid closed-loop of bacterial DNA in a condensed area
Prokaryotic Cell Parts
Cell structures animationhttpwwwwileycomlegacycollegeboyer0470003790animationscell_structurecell_structureswf
mesosomes
Prokaryotic Cell Parts
These donrsquot really exist naturally as bacterial cell parts and could be an example of a paradigm shift in thinking
They were observed in some electron micrographs and thought to be in-folds of membrane used for division respiration or making cell wallshellip
hellip turns out they are an artifact of the preparation method for some electron microscope images
httpenwikipediaorgwikiMesosome
Past-paper question E coli TEM image
Image from IB Biology QuestionBank CDRom ndash get a copy here httpsstoreiboorgbiology
Identify these structures I II III IV
Calculate the magnification of the image
Past-paper question E coli TEM image
Image from IB Biology QuestionBank CDRom ndash get a copy here httpsstoreiboorgbiology
Identify these structures I Plasma membrane II Cell wall pili III Nucleoid IV Cytoplasm ribosomes
Calculate the magnification of the image1 Measure the scale bar in mm 2 Multiply x 1000 to convert to μm That is the magnification
How long is the bacterium
PROKARYOTESEPRODUCE
through
binary fissiontwo-parts splitting
PROKARYOTESEPRODUCE
through binary fissionThe closed-loop DNA of the bacterium
makes copies through semi-conservative DNA replication
New plasmids are pulled to opposing poles by the spindle fibres
The bacterium divides in two
httpwwwyoutubecomwatchv=gEwzDydciWc
How dirty is your phone httpwwwyoutubecomwatchv=4lmwbBzClAc
Prokaryotes divide by binary fission
Life cycle of E coli from httpenwikipediaorgwikiEscherichia_coli
A man got sick from E coli after eating old sausages
Hersquod contracted a porkaryotePhoto Sausages by Paul Hickman on Flickr (CC) httpflickrpbzcFSn
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
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Cell structures animationhttpwwwwileycomlegacycollegeboyer0470003790animationscell_structurecell_structureswf
mesosomes
Prokaryotic Cell Parts
These donrsquot really exist naturally as bacterial cell parts and could be an example of a paradigm shift in thinking
They were observed in some electron micrographs and thought to be in-folds of membrane used for division respiration or making cell wallshellip
hellip turns out they are an artifact of the preparation method for some electron microscope images
httpenwikipediaorgwikiMesosome
Past-paper question E coli TEM image
Image from IB Biology QuestionBank CDRom ndash get a copy here httpsstoreiboorgbiology
Identify these structures I II III IV
Calculate the magnification of the image
Past-paper question E coli TEM image
Image from IB Biology QuestionBank CDRom ndash get a copy here httpsstoreiboorgbiology
Identify these structures I Plasma membrane II Cell wall pili III Nucleoid IV Cytoplasm ribosomes
Calculate the magnification of the image1 Measure the scale bar in mm 2 Multiply x 1000 to convert to μm That is the magnification
How long is the bacterium
PROKARYOTESEPRODUCE
through
binary fissiontwo-parts splitting
PROKARYOTESEPRODUCE
through binary fissionThe closed-loop DNA of the bacterium
makes copies through semi-conservative DNA replication
New plasmids are pulled to opposing poles by the spindle fibres
The bacterium divides in two
httpwwwyoutubecomwatchv=gEwzDydciWc
How dirty is your phone httpwwwyoutubecomwatchv=4lmwbBzClAc
Prokaryotes divide by binary fission
Life cycle of E coli from httpenwikipediaorgwikiEscherichia_coli
A man got sick from E coli after eating old sausages
Hersquod contracted a porkaryotePhoto Sausages by Paul Hickman on Flickr (CC) httpflickrpbzcFSn
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
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Past-paper question E coli TEM image
Image from IB Biology QuestionBank CDRom ndash get a copy here httpsstoreiboorgbiology
Identify these structures I II III IV
Calculate the magnification of the image
Past-paper question E coli TEM image
Image from IB Biology QuestionBank CDRom ndash get a copy here httpsstoreiboorgbiology
Identify these structures I Plasma membrane II Cell wall pili III Nucleoid IV Cytoplasm ribosomes
Calculate the magnification of the image1 Measure the scale bar in mm 2 Multiply x 1000 to convert to μm That is the magnification
How long is the bacterium
PROKARYOTESEPRODUCE
through
binary fissiontwo-parts splitting
PROKARYOTESEPRODUCE
through binary fissionThe closed-loop DNA of the bacterium
makes copies through semi-conservative DNA replication
New plasmids are pulled to opposing poles by the spindle fibres
The bacterium divides in two
httpwwwyoutubecomwatchv=gEwzDydciWc
How dirty is your phone httpwwwyoutubecomwatchv=4lmwbBzClAc
Prokaryotes divide by binary fission
Life cycle of E coli from httpenwikipediaorgwikiEscherichia_coli
A man got sick from E coli after eating old sausages
Hersquod contracted a porkaryotePhoto Sausages by Paul Hickman on Flickr (CC) httpflickrpbzcFSn
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
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Past-paper question E coli TEM image
Image from IB Biology QuestionBank CDRom ndash get a copy here httpsstoreiboorgbiology
Identify these structures I Plasma membrane II Cell wall pili III Nucleoid IV Cytoplasm ribosomes
Calculate the magnification of the image1 Measure the scale bar in mm 2 Multiply x 1000 to convert to μm That is the magnification
How long is the bacterium
PROKARYOTESEPRODUCE
through
binary fissiontwo-parts splitting
PROKARYOTESEPRODUCE
through binary fissionThe closed-loop DNA of the bacterium
makes copies through semi-conservative DNA replication
New plasmids are pulled to opposing poles by the spindle fibres
The bacterium divides in two
httpwwwyoutubecomwatchv=gEwzDydciWc
How dirty is your phone httpwwwyoutubecomwatchv=4lmwbBzClAc
Prokaryotes divide by binary fission
Life cycle of E coli from httpenwikipediaorgwikiEscherichia_coli
A man got sick from E coli after eating old sausages
Hersquod contracted a porkaryotePhoto Sausages by Paul Hickman on Flickr (CC) httpflickrpbzcFSn
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
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PROKARYOTESEPRODUCE
through
binary fissiontwo-parts splitting
PROKARYOTESEPRODUCE
through binary fissionThe closed-loop DNA of the bacterium
makes copies through semi-conservative DNA replication
New plasmids are pulled to opposing poles by the spindle fibres
The bacterium divides in two
httpwwwyoutubecomwatchv=gEwzDydciWc
How dirty is your phone httpwwwyoutubecomwatchv=4lmwbBzClAc
Prokaryotes divide by binary fission
Life cycle of E coli from httpenwikipediaorgwikiEscherichia_coli
A man got sick from E coli after eating old sausages
Hersquod contracted a porkaryotePhoto Sausages by Paul Hickman on Flickr (CC) httpflickrpbzcFSn
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
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PROKARYOTESEPRODUCE
through binary fissionThe closed-loop DNA of the bacterium
makes copies through semi-conservative DNA replication
New plasmids are pulled to opposing poles by the spindle fibres
The bacterium divides in two
httpwwwyoutubecomwatchv=gEwzDydciWc
How dirty is your phone httpwwwyoutubecomwatchv=4lmwbBzClAc
Prokaryotes divide by binary fission
Life cycle of E coli from httpenwikipediaorgwikiEscherichia_coli
A man got sick from E coli after eating old sausages
Hersquod contracted a porkaryotePhoto Sausages by Paul Hickman on Flickr (CC) httpflickrpbzcFSn
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
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httpwwwyoutubecomwatchv=gEwzDydciWc
How dirty is your phone httpwwwyoutubecomwatchv=4lmwbBzClAc
Prokaryotes divide by binary fission
Life cycle of E coli from httpenwikipediaorgwikiEscherichia_coli
A man got sick from E coli after eating old sausages
Hersquod contracted a porkaryotePhoto Sausages by Paul Hickman on Flickr (CC) httpflickrpbzcFSn
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
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How dirty is your phone httpwwwyoutubecomwatchv=4lmwbBzClAc
Prokaryotes divide by binary fission
Life cycle of E coli from httpenwikipediaorgwikiEscherichia_coli
A man got sick from E coli after eating old sausages
Hersquod contracted a porkaryotePhoto Sausages by Paul Hickman on Flickr (CC) httpflickrpbzcFSn
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
- Slide 3
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Prokaryotes divide by binary fission
Life cycle of E coli from httpenwikipediaorgwikiEscherichia_coli
A man got sick from E coli after eating old sausages
Hersquod contracted a porkaryotePhoto Sausages by Paul Hickman on Flickr (CC) httpflickrpbzcFSn
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
- Slide 3
- Slide 4
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A man got sick from E coli after eating old sausages
Hersquod contracted a porkaryotePhoto Sausages by Paul Hickman on Flickr (CC) httpflickrpbzcFSn
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
- Slide 3
- Slide 4
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For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
- Slide 3
- Slide 4
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