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Micro pour plate 9
Micro 204 pour plate lab 9
Question | Answer |
---|---|
A freshly poured plate should be rotated carefully in a | figure 8 |
What is the predominant shape of subsurface colonies | lens shape |
Which method of separating organisms seems to achieve the best separation? | pour plate |
Give 2 reasons why the nutrient agar must be cooled to 45 degrees C before inoculation and pouring. | Dilute to not kill the organism, Lesson the amount of condensation |
Name the instrument used to help count colonies on plates is the X X X. | Quebec colony counter |
This technique is said to be roughly quantitative because the loop used contains only approximately X ml. | .01 ml |
If your tubes solidify after inoculation but before you pour them into plates, what happens to the bacteria in the tubes when you remelt them? | The organism dies. |
Give one reason why you should avoid slopping agar on the cover while mixing the sample. | Contaminate the environment, Invalid colony count |
When you incubate these plated the cover should be X. | on the bottom |
When pouring an agar plate remove the cover and lay it on the bench. G or B | Bad |
Hold the cover up just enough to admit the neck of the flask. G or B | Good |
Flame the neck of the agar flask before pouring the plate. G or B | Good |
As soon as the tube is inoculated in this exercise, remove the cap and immediately pour the plate. G or B | Bad, you need to roll the tube to allow the organism to fill the entire tube. |
heat the lip of the tube so that the agar sizzles as it is being poured into the plate | Bad |
Incubate your plates with their covers facing up | Bad |
After streaking a plate with a pure culture, lay the loop down on the bench | Bad |
Carefully remove the cap on a tube, and without setting it down make your transfer. | Good |
Flame your inoculation loop before and after the transfer | Good |
While attempting to remove a tube cap, your loop accidentally touches the sleeve of your lab coat. | Bad |