Microbiology – Lab Questions – Flashcards

1. The three physical forms of laboratory media are

2. The term that refers to the purposeful addition of microorganisms into a laboratory nutrient medium is

3. Newly inoculated cultures must be _____ at a specific temperature to encourage growth.

4. A reducing medium contains

5. Agar is an important component of media because

6. The correct microbiological term for the tiny sample of specimen that is put into a nutrient medium in order to produce a culture is the

7. A microbiologist inoculates Staphylococcus aureus into a culture medium. Following incubation, both Staphylococcus aureus and Staphylococcus epidermidis are determined to be growing in this culture. What is the most likely explanation?

8. A reducing media is used to culture

9. Which type of media would be the best choice when shipping a sample of bacteria to a laboratory to be tested from a satellite office site?

10. A nutrient medium that has all of its chemical components identified and their precise concentrations known and reproducible, would be termed

11. What type of isolation technique is most effective for the majority of applications?

12. A pure culture contains

13. A microbiologist inoculates Staphylococcus epidermidis and Escherichia coli into a culture medium. Following incubation, only the E. coli grows in the culture. What is the most likely explanation?

14. Agar is a complex polysaccharide that comes from a/an

15. For which bacterial genus does mannitol salt agar differentiate between species?

16. A nutrient medium that contains at least one ingredient that is NOT chemically definable would be termed enriched.

17. Which type of medium is able to distinguish different species or types of microorganisms based on an observable change in the colonies or in the medium?

18. Bacteria that require special growth factors and complex nutrients are termed

19. Which method often results in colonies developing down throughout the agar along with some colonies on the surface?

20. A common medium used for growing fastidious bacteria is

The ___ of the microscope holds and allows selection of the objective lens.

Which objective lens should always be used for viewing first?

The coarse adjustment knob should never be used in conjunction with which objective lens?

Once immersion oil is on the slide, never put the __ into place.

For cleaning and storing the microscope which objective lens should be in place?