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35 Cards in this Set
- Front
- Back
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What is a liquid Sterilant
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Glutaraldehyde
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What is a narrow spectrum antibiotic against gram positive bacteria; inhibits PG crosslinking
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Penicillin
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What is an effective antibiotic for Pseudomonas
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gentomycin
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An antibiotic that mimics PABA
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Sulfa drugs |
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Is Tetracycline a narrow spectrum antibiotic?
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No it is a broad one
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Give an example of a disinfectant from which works with organic gram positive bacteria.
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Quats
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Is Mycobacterium an acid fast bacteria and what kind of disinfectant is effective against it?
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Yes, Phenolic compounds and Aldehydes are effective |
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Can Hydrogen peroxide inhibit Endospore, acid fast bacteria and Prions?
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Yes
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Name 3 disinfectants/antiseptic that denature portents and dissolve lipids?
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Alcohols, isopropyl, and ethanol
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Iodine and Chlorine are examples of what protein oxidizing agents?
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Halogens
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Do heavy metals deoxidise and denature proteins?
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yes
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What is FAIRLY effective against Endospore?
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Peroxyns |
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What are effective gas disinfectants?
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Chlorine and ethylene |
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Name three antibiotics which inhibit cell wall synthesis
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Penicillin, cephalosporin, and vancomycin
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Name two antibiotics that inhibits protein synthesis
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chloramphenicol, and tetracyclines
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What are 3 antibiotics that interfere with plasma membranes?
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Neomycin, nystanin, and polymyxin B
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Do Rifamycin and quinolone interfere with DNA synthesis, RNA and enzyme function?
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Yes |
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What are surfactants and do they disinfect?
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Its soap and no it does not disinfect. In fact it has very little effect.
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In a last resort case what health care people give you for an antibiotic?
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Vancomycin
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Is PEA used for Gram Negative bacteria?
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No it is used for gram positive bacteria
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What broth is used for anaerobic bacteria?
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Thiohlycolate
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Media that can be used as differential media but can also be used for gram positive bacteria.
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BAP through the use of hemolysis
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Can solid media be used to differentiate bacteria motility?
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No it has be to semi-solid
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True/False TSI can be used to distinguish the production of H2S (red) and acid production. |
False. The slant turns black and yellow not red and yellow
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What type of test is used to distinguish between streptococci and staphylococci?
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Catalase. It bubbles if positive
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True/False Oxidase turns purple when in the presence of gram positive bacteria. |
False it turns purple in the presence of gram negative bacteria
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What are the colours used to differentiate hemolysis?
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B-clear A-green Y-red |
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What color is a lactose carbohydrate broth incubating lactose fermenting bacteria?
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yellow
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what color is lactose fermenting bacteria on MAC and why is it that color?
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It is pink because it is gram negative media |
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What are the phases of a growth graph?
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Lag phase, exponential phase, stationary phase, and death phase.
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What is the difference between psycotrophs and mesophiles?
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The psycotrophs optimum growth is 20-30C and are normally seen in food spoilage. Mesophiles have a 25-40C and are seen in diseases.
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Explain where Obligate anaerobes and aerobes are located in a broth.
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Anaerobes are located at the top and need O2 and aerobes are located at the bottom and don't need O2.
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Where are microearophiles located?
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They are located in the middle if seen in a test tube.
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How would you grow Microaerophiles?
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You would use a candle jar.
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Name the Macroelements.
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Nitrogen Sulfur Phosphorous |
