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15 Cards in this Set
- Front
- Back
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eukaryotic cell structure
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Chromosomes
No Cell Wall Nucleus, Cytoplasm, Endoplasmic Reticulum, Ribosomes (80s, Cell Membrane, Vacules, Cytoskeleton |
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prokaryotic cell structure
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Tangled DNA
Plasmids Cell Membrane (some?) Ribosomes (70s) Cell Wall No Endoplasmic Reticulum, No Nucleus, |
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Name the 5 microorganisms
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Bacteria
Virus Algae Protozoans Fungi |
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Bacteria
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Very small cells, smaller the eukaryotic cells. They are prokaryotic and cause many human illnesses.
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Virus
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Small than bacteria or any other cells.
They are not cells at all. attack all living things |
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Protozoans
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A few cause diseaes (these are particularly nasty!)
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Fungi
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few harm humans
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Contrast Gram + and Gram - cell walls
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Gram+
3 dimensional mesh made of peptidoglycan Gram- Most bacteria are gram- 1st layer: lipopolyssacharide 2nd layer: Peptidoglycan |
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Autolysis and its implications
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Bacteria's way of breaking itself down (Cell Death)
ENDOTOXIN: When chunks of LPS from gram- cells gets into blood |
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Septicemia
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bacteria in bloodstream
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Septic Shock
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endotoxin in blood
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Sepsis
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bacteria growing somewhere in body
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Sketch growth curve of bacteria and implications
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1. Lag phase (prep for division)
2. Logarithmic Growth Phase 3. Stationary Phase 4. Death |
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How do penicillin and tetracyclines work?
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Penicillins break down cell wall
Tetracyclines target 70S ribosomes so they can't produce protein. These are both antibiotics |
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Viral lytic cycle of bacterial and animal viruses.
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Step One: Penetration (Attach to cell surface or simple mechanical force)
Step Two: Biosynthesis (uncoating, everything dissolves except DNA, forms capsids) Step Three: Maturation (Pushes way out and takes cell membrane, original cell explodes) |
