Medical Laboratory Assistant

22 Questions | Total Attempts: 5403

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Medical Laboratory Assistant

Module F G H


Questions and Answers
  • 1. 
    What are the electrical equipment MLA's most offten deal with?
    • A. 

      Fridges/Freezers

    • B. 

      Ovens/ stovetops

    • C. 

      Centrifuges

    • D. 

      Incubators

    • E. 

      Water baths

  • 2. 
    Horizontal rotor centrifuges achieve higher RCF than Fixed Angle rotors?
    • A. 

      True

    • B. 

      False

  • 3. 
    What are the types of centrifuges?
    • A. 

      Horizontal rotor

    • B. 

      Fixed Angle

    • C. 

      Ultra-centrifuges

    • D. 

      A and B

    • E. 

      All of the above

  • 4. 
    Specimens must be spun _________?
    • A. 

      Without a cap on

    • B. 

      With a cap on

  • 5. 
    Micro collection tubes can be spun in centrifuges if they are placed inside an empty test tube
    • A. 

      True

    • B. 

      False

  • 6. 
    Ideally all centrifuges should be spun____?
    • A. 

      Inside a biological safety cabinet

    • B. 

      A fume hood

    • C. 

      On the counter top

  • 7. 
    Centrifuges spin blood specimens in a range from _______?
    • A. 

      1000g-3000g

    • B. 

      2000g-4000g

    • C. 

      3000g-5000g

  • 8. 
    If the centrifuge is not properly loaded and balanced, which of the following may occure?
    • A. 

      Causes undue wear on rotor

    • B. 

      Causes excessive vibration which could lead the centrifuge to move aff counter top

    • C. 

      Cause unbalanced tube to break

    • D. 

      Cause redblood cells to float to top

  • 9. 
    How many minutes is an acceptable time for a centrifuge to spin blood specimens?
    • A. 

      5-10 min

    • B. 

      10-15 min

    • C. 

      15-20 min

  • 10. 
    What is the primary purpose of a centrifuge?
  • 11. 
    What should be used in a water bath?
    • A. 

      Tap water

    • B. 

      Boiled water

    • C. 

      Distilled water

    • D. 

      Purified water

  • 12. 
    The following is the proper way to clean what instrument?unplug unit and emptywipe down the interior surface with a damp cloth and mild disinfectant solutionrefill with purified water to the appropriate level needed
    • A. 

      Centrifuges

    • B. 

      Incubators

    • C. 

      Water baths

  • 13. 
    The following is the proper way to clean what instrument?  If a spill or breakage occurs , the MLA must wear gloves and spray disinfectant onto the surface allowing it to soak . Then use a damp cloth, wipe the interior to remove blood and pulverized glass.The Bung may need to be replaced.
    • A. 

      Centrifuge

    • B. 

      Incubator

    • C. 

      Water bath

  • 14. 
    What is a bung?
    • A. 

      The lid of the centrifuge

    • B. 

      The plastic or rubber mat on the bottom of the centrifuge

    • C. 

      The plastic or rubber mat on the bottom of each cup in the centrifuge

  • 15. 
    Water bath temperatures in the Transfusion Services will be at ____ degrees C  when used for ongoing daily work.
    • A. 

      4 C

    • B. 

      37 C

    • C. 

      35 C

  • 16. 
    What departments may also use a water bath?
    • A. 

      Hematology

    • B. 

      Chemistry

    • C. 

      Histopathology

  • 17. 
    How often should the temperature of a water bath be checked?
    • A. 

      Once a day

    • B. 

      Once when filling

    • C. 

      Once a day and each time it is used

  • 18. 
    What are the types of air incubators?
    • A. 

      Normal (aerobic) incubator

    • B. 

      Anaerobic chamber

    • C. 

      CO2 incubator

    • D. 

      Water incubator

  • 19. 
    The interior of an incubator should be_____  when cleaning?
    • A. 

      Filled with a disinfectant and rinsed

    • B. 

      Wiped down with a disinfectant solution

    • C. 

      Sprayed down with a disinfectant solution and left to sit for 5 min.

  • 20. 
    Why is it critical to monitor the temperature of cetain lab. refrigerators?
    • A. 

      To maintain the integrity of the products stored

    • B. 

      Some fluctuation is allowed and should not raise alarm

    • C. 

      So your lunch doesn't spoil and create an outbreak of salmonilla

  • 21. 
    Glass ware should be soaked prior to washing. Should be washed in very warm soapy water, using brushes and cloths as necessary. The glassware is then rinsed 5 times with warm tap water. Then rinsed  3 times with distilled water?
    • A. 

      True

    • B. 

      False

  • 22. 
    After the final rinse the glassware should be ______?
    • A. 

      Inspected to examine the surface of the glassware

    • B. 

      Once wet with purified water, the surface should be coated with a film of water

    • C. 

      Once wet with purifies water , the surface should run clean from any water

    • D. 

      There should be beads or oily patches where the water does not coat uniformly on the glassware

    • E. 

      There should be no beads or oily patches where the water does not unifomly coat the glassware surface.

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