Microscope and Correct Answer

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Submitted by Love,Linda(5442) on 1/19/2013 12:20:58 PM

Points Awarded

76.00

Points Missed

2.00

Percentage

97.4%

1.

Related to focal length
A) Resolution
B) Focus
C) Contrast
D) Immersion Oil

Points Earned:

2.0/2.0

Correct Answer(s):

B

2.

The total magnification achieved by the microscope is calculated by _____ the magnification of the objective and the ocular lens. A) subtracting
B) dividing
C) adding
D) multiplying

Points Earned:

2.0/2.0

Correct Answer(s):

D

3.

What is the purpose of adding a drop of mineral oil to the slide? A) To increase the magnification
B) To lubricate the revolving nosepiece
C) To reduce the amount of light rays that are refracted away from the objective lens D) To protect the lens from scratching

Points Earned:

2.0/2.0

Correct Answer(s):

C

4.

If you use a compound light microscope, a 2-micrometer bacterial cell is best seen at which magnification? A) 10X
B) 100X
C) 400X
D) 1000X

Points Earned:

2.0/2.0

Correct Answer(s):

D

5.

A compound microscope uses two lenses at once to magnify the image of a specimen. The _____ lens is found in the eyepiece and the _____ lens is found in the revolving nosepiece. A) oil immersion; ocular

B) ocular; objective
C) high-power; low-power
D) scanning; oil immersion

Points Earned:

2.0/2.0

Correct Answer(s):

B

6.

Place these structures of the compound light microscope in the order that light passes through them on the way to the observer's eyes: (1) condenser, (2) ocular lens, (3) illuminator, (4) specimen, (5) objective lens. A) illuminator → specimen → condenser → objective lens/ocular lens B) ocular lens → condenser → specimen → illuminator → objective lens C) illuminator → condenser → objective lens → specimen → ocular lens D) illuminator → condenser → specimen → objective lens/ocular lens

Points Earned:

0.0/2.0

Correct Answer(s):

D

7.

Which of the following is the most convenient and appropriate unit for expressing the size of an average bacterial cell? A) centimeter
B) micrometer
C) nanometer
D) millimeter

Points Earned:

2.0/2.0

Correct Answer(s):

B

8.

Which of the following statements about electron microscopy and light microscopy is FALSE? A) The electron microscope has greater resolution than the light microscope. B) Both the electron microscope and the light microscope use the same wavelengths for illumination. C) Images produced by light microscopes can be in color, whereas images produced by electron microscopes are black and white unless they are artificially colored. D) Electron microscopes can allow examination of viruses and internal cell structures, whereas light microscopes are limited to objects that are 0.5 micrometers and larger.

Points Earned:

2.0/2.0

Correct Answer(s):

B

9.

Enhances the resolving power of the microscope.
A) Focus
B) Resolution
C) Contrast
D) Immersion Oil

Points Earned:

2.0/2.0

Correct Answer(s):

D

10.

Label the microscope.

A. stage

B. clips

C. tube

D. condenser

E. diaphragm

F. objective lens

G. eyepiece

H. nose piece

I. course focus knob

J. fine focus knob

K. arm

L. base

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ABCDEFGHIJKLB.

ABCDEFGHIJKLC.

ABCDEFGHIJKLD.

ABCDEFGHIJKLE.

ABCDEFGHIJKLF.

ABCDEFGHIJKLG.

ABCDEFGHIJKLH.

ABCDEFGHIJKLI.

ABCDEFGHIJKLJ.

ABCDEFGHIJKLK.

ABCDEFGHIJKLL.

Points Earned:

24.0/24.0...
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