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30 Cards in this Set
- Front
- Back
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Gram Positive Color
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Blue
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Gram Negative Color
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Red
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Bacterial Cell Wall is Made of...
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Peptidoglycans
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Peptidoglycan Components
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Repeating disaccharides with 4 Amino Acid Residues Coming Off
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Transpeptidase function
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Cross Links Neighboring AAs on Peptidoglycan
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Another Name for Transpeptidase
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Penicillin Binding Protein
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Does a gram positive cell have an outer membrane?
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No... only a peptidoglycan cell wall
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What does murein lipoprotein do?
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It links the cell wall of gram negative bacteria to the outer membrane.
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Who has a "periplasmic space"... a gram positive or a gram negative bacteria
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Gram Negative
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What are the three components of LPS?
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Lipid A (AKA endotoxin)
Core Polysaccharide O-Specific Side Chain |
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Where is LPS found?
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It coats the outer membrane of gram negative bacteria.
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Which part of LPS points outward?
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The O-specific side chain (think "O" for "Outer Space".
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Is endotoxin water soluble or lipid soluble?
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Lipid soluble... remember its other name is "Lipid A"
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Name the 2 pathogenic Gram Positive bacteria that are cocci.
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Streptococcus
Staphylococcus |
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Name the 2 pathogenic gram positive bacteria that form rods that form spores.
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Bacillus
Clostridium |
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Name the 2 pathogenic gram positive bacteria that form rods that do NOT form spores.
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Cornyebacterium
Listeria |
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Which is the ONLY gram positive bacteria that has endotoxin?
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Listeria
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Name the only gram negative bacteria that forms cocci (actually it is diplococcus)
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Neisseria
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What are the two notable cytoplasmic structures of bacteria?
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DNA (double stranded ring)
Ribosomes |
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What is the number for the bacterial ribosome?
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70S
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What are the numbers for the two subunits of bacterial ribosomes?
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50S
30S (note they add up to 70S... not 80S) |
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Catalase reaction
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2H202 --> 2H20 + 02
(same as peroxidase reaction) |
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Superoxide Dismutase reaction
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02- + 02- + 2H+ --> H202 + 02
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What are the four classes of bacteria relative to their reaction to oxygen... in decreasing order of oxygen tolerance.
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Obligate Aerobes
Facultative Anaerobes Microaerophilic Obligate Anaerobes |
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Bacteria that use inorganic carbon as an energy source...
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autotrophs
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Bacteria that use organic carbon as an energy source...
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heterotrophs
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Bacteria that can use either organic or inorganic carbon as an energy source...
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chemoheterotrophs
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Obligate Intracellular Organism...
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cannot make its own ATP but must steal ATP from its host.
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Respiration
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aerobic glycolysis, TCA cycle, ETC, etc.
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Fermentation
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Anaerobic glycolysis...
can produce many different byproducts (lactic acid, ethanol, propionic acid, acetone, etc) by which bacteria can be distinguished |
