Clinical Microbiology

UNIT I PRACTICAL REVIEW

  1. Perform a Gram Stain on a prepared slide.
  2. Streak plate for isolation and preparing a Gram stain(s) from the culture (refer to last weeks evaluation of streaking for the grading process)
  • You will be streaking a plate from a prepared swab on Thursday. During the lab practical you will evaluate the plate you streaked the day before and make Gram stain(s) on the colonies on the plate. I will read the Gram stains you have prepared and stained.
  1. Recognize type of hemolysis and swarming.
  2. What grows on each of the following media and differential reactions if any:
  • Columbia CNA agar
  • SXT agar
  • Bile Esculin Agar
  • Chocolate agar only
  • Modified Thayer Martin agar
  • MacConkey
  • Eosin Methylene Blue agar
  • Tergitol 7 agar with TTC
  • On Tergitol how does E.coli look different than the other lactose fermenters?
  1. Distinguish between the following growth requirements:
  • Obligate aerobe
  • Obligate anaerobe
  • Capnophilic
  1. Perform a wet mount and distinguish between cocci and yeast at 40X
  2. Perform the following rapid tests from memory:
  • Catalase
  • Oxidase
  • Coagulase
  • Spot indole
  1. When given a Gram stain to read, determine when to perform an oxidase or catalase and then perform it if asked.
  2. Read a bile solubility
  3. Know the reagents needed for the following:
  • Catalase
  • Oxidase
  • Coagulase
  • Spot indole
  • Bile solubility
  1. Read provided Gram stains for:
  • Gram stain morphology
  • Extra credit for indicating what the organism might be:
  1. Quality of sputum under low power evaluation using Bartlett’s classification

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Clinical Microbiology Syllabus