Answer Key for Quiz 7:  Equipment
 
 The correct answer is starred.

1. The name of this piece of equipment is

  1. boiling flask.
  2. Erlenmeyer flask .
  3. candle jar
  4. Coplin jar. *
  5. Brewer anaerobic jar.

2. The function of the piece of equipment shown in question 1 is to

  1. decrease the amount of oxygen in the culture environment.
  2. eliminate oxygen in the culture environment.
  3. provide a safe container for boiling liquids.
  4. measure liquids accurately
  5. stain slides . *

3. Observe the piece of equipment shown here. Note the methylene blue indicator strip inside the jar. The fact that this strip is blue in color

  1. is insignificant.
  2. indicates carbon dioxide is present in the jar.
  3. indicates carbon dioxide is absent in the jar .
  4. indicates oxygen is present in the jar .*
  5. indicates oxygen is absent in the jar.

4. This image shows a

  1. Pasteur pipette.
  2. drain out pipette .*
  3. blow-out pipette.
  4. Salversan burette.
  5. graduated cylinder.

5. If you are using the piece of equipment shown in question 4 to transfer 10 milliliters of liquid, you should

  1. let the liquid drain from the "0" mark to the "10" and discard the rest .*
  2. let the liquid drain from the "0" mark to as far as it drains naturally and then blow out the rest of the liquid and include it in your sample.
  3. the procedures described in choices a and b are equally correct.

6. You should use the piece of equipment shown here if you are working with

    1. hazardous reagents.
    2. a live bacterial culture.
    3. water.
    4. a or b above. *
    5. a,b or c above.

7. The paper shown in this image is used for

  1. cleaning the lenses of the microscope.
  2. blotting up spills of bacterial cultures.
  3. blotting liquid from recently stained slides so they can be viewed with a microscope. *
  4. cleaning up bibs.
  5. none of the above .

8. The piece of equippment shown here is a

  1. dropper bottle.
  2. reagent bottle .
  3. dilution bottle. *
  4. pipette pump .
  5. none of the above.

9. The piece of equipment shown here is used to

    1. culture bacteria.
    2. culture yeast.
    3. stain slides for viewiing with the microscope.
    4. boil liquids .
    5. sterilize heat-sensitive substances.*

10. A pipette that is graduated to the tip and has a colored or etched ring around the top is a __________ pipette.

  1. blow-out. *
  2. drain-out.
  3. Pasteur.
  4. useless.
  5. none of the above.