BIOL 2051 Lab Quizzes and All
Complete Answers 2025-2026
Updated.
Lauryl sulfate lactose broth, Brilliant green lactose bile broth - Answer Which of the
following media is/are used in the series of tests for the most probable number (MPN)
technique?
a. Lauryl sulfate lactose broth
b. Brilliant green lactose bile broth
c. phenyl ethyl alcohol agar
d. trypticase soy agar
100x - Answer What is the highest magnification of the objective you will use to view your
smear?
Select one:
a. 2x
b. 5x
c. 10x
d. 40x
e. 100x
0.2 microns - Answer What is the smallest size cell you can see with the light microscopes in
lab?
Select one:
a. 2 nanometers
b. 2 microns
c. 2 millimeters
d. 0.2 microns
58 (30-200 colonies) - Answer The following are numbers of colonies on pour plates. Choose
the countable plate.
Select one:
a. 470
b. 1000
c. 58
d. 331
, e. 17
red spirals and red cocci - Answer In doing a Gram stain of the Gram standard you forget to
add iodine. What will you likely see?
Select one or more:
a. purple spirals
b. red spirals
c. red cocci
d. purple cocci
EMB - Answer What type of agar inhibits the growth of Gram positive bacteria?
solidify rapidly - Answer When pouring melted agar deeps into the Petri dishes after you
have made your dilutions the agar will be cool enough not to kill any of the bacteria but you
must work quickly because the agar will __________ ______________.
all - Answer Which of the following are practical reasons for quantifying microbial cell
numbers?
Select one:
a. Determining beverage quality
b. all
c. Analyzing food products
d. Evaluating antibiotics
Lawn - Answer a swab of the entire plate
No - Answer Growth and gas production in 4, 10mL LSL tubes 5, 1mL LSL tubes and 0, 0.1mL
LSL tubes. Is the water potable?
Decolorization - Answer _______________ with acid alcohol removes the carbolfuchsin from
the acid-fast cells.
An isotonic solution - Answer When a person is dehydrated, medics give them fluids through
an IV straight into the bloodstream. Considering the concentration of solution within red blood
cells, what type of solution should be in the IV bag?
endospores - Answer - can survive heating, freezing, drying, exposure to various chemicals,
radiation, and boiling water
Complete Answers 2025-2026
Updated.
Lauryl sulfate lactose broth, Brilliant green lactose bile broth - Answer Which of the
following media is/are used in the series of tests for the most probable number (MPN)
technique?
a. Lauryl sulfate lactose broth
b. Brilliant green lactose bile broth
c. phenyl ethyl alcohol agar
d. trypticase soy agar
100x - Answer What is the highest magnification of the objective you will use to view your
smear?
Select one:
a. 2x
b. 5x
c. 10x
d. 40x
e. 100x
0.2 microns - Answer What is the smallest size cell you can see with the light microscopes in
lab?
Select one:
a. 2 nanometers
b. 2 microns
c. 2 millimeters
d. 0.2 microns
58 (30-200 colonies) - Answer The following are numbers of colonies on pour plates. Choose
the countable plate.
Select one:
a. 470
b. 1000
c. 58
d. 331
, e. 17
red spirals and red cocci - Answer In doing a Gram stain of the Gram standard you forget to
add iodine. What will you likely see?
Select one or more:
a. purple spirals
b. red spirals
c. red cocci
d. purple cocci
EMB - Answer What type of agar inhibits the growth of Gram positive bacteria?
solidify rapidly - Answer When pouring melted agar deeps into the Petri dishes after you
have made your dilutions the agar will be cool enough not to kill any of the bacteria but you
must work quickly because the agar will __________ ______________.
all - Answer Which of the following are practical reasons for quantifying microbial cell
numbers?
Select one:
a. Determining beverage quality
b. all
c. Analyzing food products
d. Evaluating antibiotics
Lawn - Answer a swab of the entire plate
No - Answer Growth and gas production in 4, 10mL LSL tubes 5, 1mL LSL tubes and 0, 0.1mL
LSL tubes. Is the water potable?
Decolorization - Answer _______________ with acid alcohol removes the carbolfuchsin from
the acid-fast cells.
An isotonic solution - Answer When a person is dehydrated, medics give them fluids through
an IV straight into the bloodstream. Considering the concentration of solution within red blood
cells, what type of solution should be in the IV bag?
endospores - Answer - can survive heating, freezing, drying, exposure to various chemicals,
radiation, and boiling water
