Prince George Community College » Biology » Bio 2010 - Microbiology » Spring 2021

Question #1

Once inoculated with bacteria, how should agar Petri plates be incubated?

A. sideways

B. more than one of the above is correct

C. right side up

D. upside down

E. none of the above is correct

Question #2

Where should Petri dish lids be placed during the aseptic transfer technique?

A. in your hand, facing up

B. on the table, facing up

C. more than one of the above is correct

D. on the table, facing down

E. in your hand, facing down

F. none of the above is correct

Question #3

How should you sterilize materials that will make contact with your culture media?

A. wiping it down with a tissue

B. more than one of the above is correct

C. by using the Bunsen burner and flaming them

D. wash them in the sink

E. you don't need to sterilize materials that will make contact with your experiment

F. none of the above is correct

Question #4

Which of the following best describes sterile media?

A. more than one of the above is correct

B. media free from nutrients

C. media with low pH

D. media free from living organisms

E. none of the above is correct

Question #5

Which of the following best describes contamination?

A. more than one of the above is correct

B. presence of carbon dioxide

C. presence of oxygen

D. oxygen free

E. presence of microorganisms

F. none of the above is correct