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33 Cards in this Set
- Front
- Back
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What are the 3 kinds of spiral bacteria?
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Spirochaete, Spirillum, Vibrio
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What are the 4 arrangements that may occur with cocci bacteria?
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Diplo (pair)
Strepto (chains) Staphylo (grape-like) Packets (tetrads or octads) |
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Does the name of a bacteria consistently describe the bacteria's shape or arrangement?
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Shape
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What feature of a cell does a gram stain test?
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Cell wall
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What color is a gram + tested bacteria?
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Purple
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What color does an acid fast bacteria stain to? Negative?
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Positive = Pink
Non-acid fast = Blue |
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Does acid fast stain have a positive or negative charge?
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Negative
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Which organelles do prokaryotes have?
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None
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What makes up a cell membrane in a prokaryote?
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Phospholipids, channels, receptor proteins, fluid
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What element is found in bacteria cell walls?
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Poptidoglycan
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Which cells have more peptidoglycan, gram + or gram - ?
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Gram +
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What is the role of teichoic acid in a cell wall?
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Functions as an antigen which your body's immune system recognizes. Only in Gram + cells
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What are porins and what kind of cells are they found in?
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Nonspecific channels, Found in Gram - cells only
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What is the inner layer of the Gram - wall consisted of?
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Peptidoglycan embedded in a periplasmic gel
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Does the outer membrane of the gram - cell have a + or - charge?
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Strong Neg charge
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What is the outer layer of the the gram - consisted of?
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Lipoproteins
Lipopolysaccharides Phospholipids |
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What is an acid-fast cell wall consisted of?
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Peptidoglycan covered by a lipid bilayer
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In what kind of a cell does the plasma membrane have sterols?
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Wall deficient
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Where is glycocalyx located and what does it do?
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Located on the outside of the cell wall
Inhibits phagocytosis |
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What's the difference between fimbrea and pili?
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pili is longer and there are usually fewer
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What is the function of fimbrea and pili?
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Used for attachment to tissues and/or each other
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Describe what an axial filament does and what kinds of cells they are found on?
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They wrap around spirochaetes and are pulled tight to make the cell crimp up and move
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Where are endospores formed?
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Inside the plasma membrane
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What is the genetic material in prokaryotes?
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Single molecule of DNA
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What is cell division called in prokaryotes?
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Binary fission
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Do cell membranes have phospholipids have sterols in prokaryotes?
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No
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What element in bacteria cell walls is not found in any other kind of cell?
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Peptidoglycan
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Where do you find lipid a polysaccharides?
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Gram - cell walls
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What 3 atoms is glycocalyx made of?
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C, H, O
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Filamentous protein appendages promote pellicle formation. What is a pellicle?
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Scum layer... this layer supporting the cell membrane
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What is the host enzyme that is able to digest cell walls?
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Lysozyme
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What kind of cells are resistance to staining by usual methods?
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Acid fast bacteria
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Are wall deficient bacteria smaller or larger than most bacteria?
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Smaller
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