BIOL 2051 Lab Quizzes 1-4 Questions And
Complete Solutions
What method of sterilization is used to sterilize the media you use in the lab?
Select one:
a. electromagnetic radiation
b. gas
c. filtration
d. moist heat sterilization - answer d. moist heat sterilization
Allergies have been bothering you lately. As you were inoculating your streak plate with
E. coli you sneeze. With a plate in one hand and an inoculating loop in the other you
were unable to quickly cover your mouth. You tried to sneeze into your arm but your
unstifled sneeze was greater than your arm could shield. Following incubation of your
plate, what do you expect to see on the plate next lab?
Select one or more:
a. Nothing because you did not inoculate the plate.
b. There will be E. coli along with bacteria from your mouth on the plate.
c. Nothing because the media in the plate was sterilized.
d. Microorganisms are in the air transiently so there could be growth from contaminates
in the air. - answer b. There will be E. coli along with bacteria from your mouth on the
plate.
d. Microorganisms are in the air transiently so there could be growth from contaminates
in the air.
Which of the following term describe the optical properties of a colony?
Select one:
a. translucent
b. dull
c. shiny
, d. irregular - answer a. translucent
Which of the following terms describe the whole colony shape of a colony?
Select one:
a. umbonate
b. lobate
c. filamentous
d. round - answer d. round
Which of following is used to determine colony morphology of a microorganism?
Select one or more:
a. your eye
b. a colony
c. a microscope
d. a broth culture - answer a. your eye
b. a colony
When you calculate population standard deviation, you divide the squared differences
by the total number of population observations.
Select one:
True
False - answer True
What is the correct order of events in demonstrating aseptic technique to prepare a
smear from a broth culture? (You may use an answer choice more than once if needed.
Your answer needs to be written with no spaces between letters; for example:
abcdefgh)
a. Replace the cap on the test tube;
b. Allow loop to cool;
c. Remove a loopful of microorganisms from the broth;
d. Heat the loop and wire until red hot;
e. Place a loopful of microorganisms onto the slide;
Complete Solutions
What method of sterilization is used to sterilize the media you use in the lab?
Select one:
a. electromagnetic radiation
b. gas
c. filtration
d. moist heat sterilization - answer d. moist heat sterilization
Allergies have been bothering you lately. As you were inoculating your streak plate with
E. coli you sneeze. With a plate in one hand and an inoculating loop in the other you
were unable to quickly cover your mouth. You tried to sneeze into your arm but your
unstifled sneeze was greater than your arm could shield. Following incubation of your
plate, what do you expect to see on the plate next lab?
Select one or more:
a. Nothing because you did not inoculate the plate.
b. There will be E. coli along with bacteria from your mouth on the plate.
c. Nothing because the media in the plate was sterilized.
d. Microorganisms are in the air transiently so there could be growth from contaminates
in the air. - answer b. There will be E. coli along with bacteria from your mouth on the
plate.
d. Microorganisms are in the air transiently so there could be growth from contaminates
in the air.
Which of the following term describe the optical properties of a colony?
Select one:
a. translucent
b. dull
c. shiny
, d. irregular - answer a. translucent
Which of the following terms describe the whole colony shape of a colony?
Select one:
a. umbonate
b. lobate
c. filamentous
d. round - answer d. round
Which of following is used to determine colony morphology of a microorganism?
Select one or more:
a. your eye
b. a colony
c. a microscope
d. a broth culture - answer a. your eye
b. a colony
When you calculate population standard deviation, you divide the squared differences
by the total number of population observations.
Select one:
True
False - answer True
What is the correct order of events in demonstrating aseptic technique to prepare a
smear from a broth culture? (You may use an answer choice more than once if needed.
Your answer needs to be written with no spaces between letters; for example:
abcdefgh)
a. Replace the cap on the test tube;
b. Allow loop to cool;
c. Remove a loopful of microorganisms from the broth;
d. Heat the loop and wire until red hot;
e. Place a loopful of microorganisms onto the slide;
