Los Angeles Valley College » Microbiology » Microbiology 020 - General Microbiology » Fall 2020

Question #1

Oil immersion is used with which of the following lenses? Choose all that apply.

A. 40x

B. 10x

C. 4x

D. 100x

Question #2

Which of the following controls on the microscope affect the amount of light reaching the ocular lens? Choose all that apply.,,

A. diaphragm lever

B. Illuminator

C. objective lense

D. coarse focus knob

E. light intensity knob

Question #3

_______ refers to the ability of a microscopy in distinguishing two points as separate.

A. magnifying

B. resolution

C. illuminating

Question #4

The high-dry lens will be optimal for observing multicellular fungi or algae.

A. TRUE

B. FALSE

Question #5

The oil immersion objective lens is necessary to determine the morphology of prokaryotes.

A. FALSE

B. TRUE

Question #6

If the ocular lens magnification is 10X, what is the total magnification of the specimen while using the 40x objective lens?

A. 4000

B. 40000

C. 40

D. 400

Question #7

When using the 100X objective lens only the course focus knob should be used.

A. TRUE

B. FALSE

Question #8

When using the microscope, once focused under 4X you

A. will switch sequentially the objective lenses

B. switch to view the specimen directly under 100X