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5 Written questions

5 Matching questions

  1. Distinguish between chemically defined, complex and living media.
  2. Watson & Crick
  3. mixed culture
  4. lyophilization
  5. endospores
  1. a Chemically defined have a know molecular formula
  2. b United States geneticist who (with Crick in 1953) helped discover the helical structure of DNA (born in 1928)
  3. c A thick-walled protective spore that forms inside a bacterial cell and resists harsh conditions
  4. d container growing two or more indentified species
  5. e freeze-drying....a common way to desiccate a stock culture. a liquid culture of the microorganism is poired into a small test tube, skim milk is often added to protect the cells during the drying process. then the mixture is frozen with dry ice and exposed to a vacuum. the test tube is tightly sealed by fusing the neck shut with a flame. once the process is complete, the culture can be stored at room temperature

5 Multiple choice questions

  1. the use of chemical agents to treat or control disease (or mental illness)
  2. Lag Phase, Exponential Phase, Stationary Phase, Death Phase
  3. short, hairlike protein structures on the surface of some bacteria
  4. the interval between exposure to infection and the appearance of the first symptom
  5. (microbiology) a group of organisms grown from a single parent cell

5 True/False questions

  1. periplasmshort, hairlike protein structures on the surface of some bacteria


  2. brothliquid media used for growing cells


  3. Explain the basic shapes and groupings of bacteria (morphological characteristics)Coccus, rod or bacillius, curved or spiral


  4. inoculationinjecting a person with a small dose of a virus to help build up defenses to a disease


  5. List and define the five methods of culturing microorganismsLag Phase, Exponential Phase, Stationary Phase, Death Phase


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