MCB 2610 Lab Practical Exam Questions
And Correct Answers.
The __________ method is a quick and easy way to isolate bacteria - answer✔✔streak plate
in what orientation do you incubate the plates after they have been streaked? - answer✔✔agar
half on top
what must you do to the loop before every use? - answer✔✔flame sterilize your loop
T/F: The last thing you do before leaving the lab is take off your lab coat - answer✔✔False
T/F: When performing a T-streak, the loop goes into the tube 3 times (once for each section of
the plate) - answer✔✔False
T/F: You do not heat a pipette in the bunsen burner flame - answer✔✔True
what is the first thing you should do following a spill? - answer✔✔alert TA
Who do you contact to reschedule a lab? - answer✔✔one of your TAs or lab supervisor
Where do the test tubes get disposed of? - answer✔✔Test tube waste under sink
which of the following is an indirect mode of transmission? - answer✔✔cell phone
T/F: When making a smear of the culture, you heat fix the slide before air drying it completely -
answer✔✔False
T/F: Washing your hands is the last thing you do when you leave the lab - answer✔✔True
What is the magnification value of the ONLY objective lens that should come in contact with
immersion oil? - answer✔✔100x
Pertaining to the Gram Stain, cells that retain crystal violet & appear purple are said to be
__________ - answer✔✔Gram positive
T/F: your name, the date, and sample information goes on the lid of the agar dish -
answer✔✔False
Pertaining to the Gram Stain, cells that do not retain crystal violet & appear pink are said to be
Gram ________ - answer✔✔Negative
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