Microbiology Lab
Quiz 4 Questions
and Complete
Solutions Graded
A+
Denning [Date] [Course title]
, If you forgot to apply Maneval's to a capsule stain smear, what will you see under the microscope?
a. the background will be red, but the cells and capsules that surround them will be colorless
b. no cells will be visible
c. red cells and red background
d. colored capsule - Answer: a. the background will be red, but the cells and capsules that surround
them will be colorless
If you inoculated a motility deep with Staphylococcus epidermidis, what is the result you would expect?
a. Red color radiating out from the stab line.
b. No color change at all in the tube.
c. Red color only were you stabbed the deep. - Answer: c. Red color only were you stabbed the deep.
Specialized slide for counting cells - Answer: hemocytometer, hemacytometer
The counting area of the grid shown here on the right contains what volume of liquid?
a. 0.1 microliter
b. 0.1 milliliter
c. 1.0 milliliter
d. 1.0 microliter - Answer: a. 0.1 microliter
T or F: You will count the number of cells in 5 of the 25 squares in the large central 1mm2 square shown
here. - Answer: True
T or F: You must put a sterile pipette tip on the end of the pipette before you depress the plunger to the
first stop and try to draw up liquid. - Answer: True
Which of the following represents a serial dilution?
a. The transfer of 1mL of culture into an empty tube.
b. The transfer of 1mL of culture into 9mL of buffered water in tube 1; transfer 1mL from tube 1 into
9mL of buffered water in tube 2.
Quiz 4 Questions
and Complete
Solutions Graded
A+
Denning [Date] [Course title]
, If you forgot to apply Maneval's to a capsule stain smear, what will you see under the microscope?
a. the background will be red, but the cells and capsules that surround them will be colorless
b. no cells will be visible
c. red cells and red background
d. colored capsule - Answer: a. the background will be red, but the cells and capsules that surround
them will be colorless
If you inoculated a motility deep with Staphylococcus epidermidis, what is the result you would expect?
a. Red color radiating out from the stab line.
b. No color change at all in the tube.
c. Red color only were you stabbed the deep. - Answer: c. Red color only were you stabbed the deep.
Specialized slide for counting cells - Answer: hemocytometer, hemacytometer
The counting area of the grid shown here on the right contains what volume of liquid?
a. 0.1 microliter
b. 0.1 milliliter
c. 1.0 milliliter
d. 1.0 microliter - Answer: a. 0.1 microliter
T or F: You will count the number of cells in 5 of the 25 squares in the large central 1mm2 square shown
here. - Answer: True
T or F: You must put a sterile pipette tip on the end of the pipette before you depress the plunger to the
first stop and try to draw up liquid. - Answer: True
Which of the following represents a serial dilution?
a. The transfer of 1mL of culture into an empty tube.
b. The transfer of 1mL of culture into 9mL of buffered water in tube 1; transfer 1mL from tube 1 into
9mL of buffered water in tube 2.
