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Antiseptic technique (lab exam 2)
Terms in this set (22)
spell E. coli
3% Hydrogen peroxide
(water and oxygen)
1% silver nitrate
How did we apply our microorganism to the surface of this plate?
-dipped disc in chosen antiseptic
-pressed disc down on plate
-flame the tweezers
How did we evaluate whether the antiseptic was effective or not? You should be
able to come to proper conclusions if I provide you with a data table or agar plates.
we measured the death zone in millimeters with a ruler
Which organism was the least resistant (most susceptible)
Which organism was the most resistant (least susceptible)
how would you prove that a particular antseptic is more effective at inhibiting the growth of a particular microorganism?
the more effective, the larger the death zone
what would the plate look like if the antiseptic did NOT inhibit growth
-the plate would be covered in bacteria
-there would be no death zone
would a resistant microorganism show large or small numbers of death
would a more effective antiseptic show large or small numbers of death
which chemical in the experiment appears to be the most effective at controlling growth?
would a less effective antiseptic show large or small numbers of death?
which chemical in the experiment appears to be the least effective at controlling growth?
70% isopropanol and 1% silver nitrate
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