California State University, Fullerton » Biology » Biology 302 - General Microbiology » Spring 2022

Question #1

When using the hemocytometer for cell counting, you will be counting _______ of the 1/25 mm2 squares.

A. 10

B. 6

C. 5

D. 4

E. 3

Question #2

In the live/dead stain, live cells will be stained

A. green

B. blue

C. red

Question #3

In the live/dead stain, cells with damaged membranes will be stained with

A. SYTO 9

B. propidium iodide

Question #4

In the live/dead stain, the stains are potentially mutagenic because they can bind to

A. bacterial cells only

B. nucleic acids

Question #5

What is the volume of a large 1/25 mm2 square? (hint: the depth is 0.1 mm and 1 mm3 is equal to 1 µL.)

A. 0.025 µL

B. 0.25 µL

C. 4 µL

D. .004 µL

E. 2.5 µL

F. 0.4 µL