2.7.2: Fill-In-The-Bank

1. are procedures utilized to reduce microbial numbers in an attempt to prevent spreading the microbes.

2. The solidifying agent, is used to create solid media for use in the microbiology lab.

3. Microorganisms are classified into four , based on the level of measures needed to safely work with the organism.

4. microscopes use two sets of lenses, an ocular lens and objective lens to magnify the specimen.

5. The method is used to isolate bacteria on the surface of solid media.

6. is the process of moving bacteria from a media source in which they have been growing to a new sterile media source.

7. The , is the magnification calculated by multiplying the magnifying power of the ocular lens with the magnify power of the objective lens.

8. In the streak plate method, the quadrant will show the greatest number of isolated colonies.

9. When using a compound microscope to view a specimen with the high or oil objective lens, you should use the to bring the specimen into focus.

10. A is an instrument with a straight wire, which is used to stab media during the inoculating process.

11. Always carry the microscope with one hand on the and the other hand under the .

12. Unwanted microbes that find their way into our cultures are called .

13. Nutrient agar are often used to store and transport microbes.

14. The concentrates light onto the slide and contains an iris diaphragm to control the angle and the size of the cone of light.

15. To increase the magnification, you must switch to a higher-power .