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Microbio 150 Lab exam 1 PVCC Questions and Answers 100% Pass $11.49
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Microbio 150 Lab exam 1 PVCC Questions and Answers 100% Pass

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  • Course
  • Microbiology Lab
  • Institution
  • Microbiology Lab

Microbio 150 Lab exam 1 PVCC Questions and Answers 100% Pass When preparing to view a specimen on a compound microscope in the lab, one should __________ begin with the 4x objective - Always Where should used gloves be disposed of in the microbiology lab - In the bio-hazard waste container Be...

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  • January 17, 2025
  • 7
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Microbiology Lab
  • Microbiology Lab
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KatelynWhitman
Microbio 150 Lab exam 1 PVCC
Questions and Answers 100% Pass

When preparing to view a specimen on a compound microscope in the lab, one should

__________ begin with the 4x objective - ✔✔Always


Where should used gloves be disposed of in the microbiology lab - ✔✔In the bio-hazard

waste container


Before putting a dust cover over the microscope and placing it in the cabinet, which

objective lens should be rotated over the stage - ✔✔4x


On the microscope, what concentrates the light on the specimen? - ✔✔Condenser lens


On the microscope, what bends light passing through the specimen to create a real

image - ✔✔Objective lens


On the microscope, what allows for more or less light to be directed onto the specimen -

✔✔Iris diaphragm


On the microscope, what gives you clarity of the image - ✔✔Resolution




Katelyn Whitman, All Rights Reserved © 2025 1

, Why is desiccating your inoculating loop important? When should this be done? -

✔✔To ensure it is sterilized, done so no cross contamination happens


During an aseptic transfer, when do you pass the mouth of the test tube through the

flame? - ✔✔Before and after dipping loop in


During the broth to slide aseptic transfer, a __________ was used to obtain a pure

culture from a __________. - ✔✔Loop, broth


Prior to staining, smears of microorganisms are heat-fixed in order to - ✔✔Attach it

firmly to the slide


The term that refers to the purposeful addition of microorganisms into a nutrient

medium is - ✔✔Inoculation


True or false: In the microbiology lab, it is acceptable to move your loop around while

waiting for it to dry. - ✔✔False


Which stain was used during the negative staining procedure? - ✔✔Nigrosin


Which stain was used during the simple staining procedure? - ✔✔Methylene blue


True or false: During a negative stain, the bacteria are heat fixed. - ✔✔False


Bacteria in the Mycobacterium genus have the presence of what component in the cell

wall that causes them to be acid-fast? - ✔✔Peptidoglycan




Katelyn Whitman, All Rights Reserved © 2025 2

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