Illustrations for Exam 2

Illustrations for Exam 2 - Cellular Morphology Spirals:...

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Cellular Morphology
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Spirals:
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SIZE OF PROKARYOTES
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Cell Wall
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Peptidoglycan structure
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Gram-positive cell wall
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Gram-negative cell wall
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Cytoplasmic Membrane
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Integral membrane proteins Peripheral membrane proteins
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Ester vs. ether linkages
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70S 50S 30S 5S rRNA 23s rRNA 16s rRNA + 34 polypeptides + 21 polypeptides The 50s consists of the 5s rRNA, 23s rRNA and 34 polypeptides The 30s consists of the 16s rRNA and 21 polypeptides Because the sedimentation rates are dependent not only on mass and size but also on shape, the sedimentation rates of subunits do not add up to the sedimentation rate of the whole ribosome.
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Basal Body Gram-negative Bacterium Gram-positive Bacterium cytoplasmic membrane peptidoglycan outer membrane L ring P ring MS ring C ring MS ring C ring
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Flagellar arrangements
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Flagellar movement
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Pilus Fimbriae Pili – used for attachment Sex pilus- used to transfer DNA
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Bacteria such as Neisseria gonorrhoeae use pili to adhere to the mucous membranes of the urethra and thus resist the flushing action of the urine.
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Illustrations for Exam 2 - Cellular Morphology Spirals:...

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