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33 Cards in this Set
- Front
- Back
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Cell membrane
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Made of phospholipid bilayer
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S layer
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Used for protection or attachement. Only produced in hostile enviornments
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Fimbriae
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Bristles for adhesion to other cells and other surfaces. Not for movement.
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Outermembrane
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Extra membrane containing lipopolyshacharide. COntrols flow of materials
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Pilus
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Appendage that draws bacteria close to the cell to transfer dna.
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Capsule
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May prevent bacteria from being recognized by host if its on the bacteria.
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Inclusion or Granule
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Store nutrients such as fat phsophate or glycogen
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Plasmid
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Containing antibodies that are used every now and again.
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Endospores
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Dormant body formed within some bacteria for survival in harsh enviornments. Genus bacillus and genus clostridium can form endospores.
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Tetrads
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groups of four
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Staphylococci
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Cocci in grape clusters
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Streptococci
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chain
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Sarcina
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cubical
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Diplobacilli
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Pairs of cells with their ends attached
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Streptobacilli
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chainof cells
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FLagellar arrangments
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Mono, lopho, amphi, peri ---- trichous
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Chemotaxis
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Movement in response to chemical signals
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Positive and negative chemotaxis
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Movement towards or away from chemical stimulus.
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Phototaxis
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Movement towards light
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How bacteria move
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Run and tumble. Slide 11.
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Biofilm
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Plaque. Made of bacteria, fungus and protozoa.
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Cell envelope
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Composed of two or three different things: Cell wall, cell membrane and outer membrane.
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Cell wall
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Made of peptidoglycan. Gram positive has a bigger one than gram negative ones do. Protects from bursting or collapsing due to osmotic pressure. |
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Cell membrane
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Phospholipid bilayer.
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Outer membrane
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Only found in gram negative. Made of phospholipid bilayer.
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Lipoteichoic and techoic acid. Gram positive or negative? Which one is internal which is peripheral? Pic slide 24 |
Gram positive. Techoic is peripheral lipoteichoic is integral.
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Lippoplysacharide. Positive or negative? Toxic to whom?
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Negative. Toxic to mammals.
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Peptidoglycan. Why significant? Pic slide 27
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Repeating series of sugars called NAG+NAM with peptide links between NAM. Stopping connections of peptidoglycan can halt production of bacteria. |
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Mycolic acid. What type of stain and disease is associated with this?
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Found in mycobacterium and Nocardia. Acid fast stain. Turbuculosis and leprosy.
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Mycoplasmas
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Lack a cell wall
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Functions of cell membrane
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Energy, nutrient processing, synthesis, transport
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What types of molecules enter the cell membrane easily?
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Non polar.
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Outermembrane
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Makes killing bacteria harder. Outer membrane is toxic.
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