Question 1

Convert 4 mm into μm.

Accepted Answer

A)  0) 04 μm
B)  0) 004 μm
C)  4000 μm
D)  400 μmE) A) and C)
F) C) and D)

Question 2

Explain why the field diameter decreases with increasing magnification.

Accepted Answer

A)  The lens is closer to the specimen and less of the specimen can be illuminated.
B)  Increasing magnification decreases the working distance rather than the field diameter.
C)  Using the oil-immersion lens limits the ability to illuminate a specimen at high power.
D)  Parfocal microscopes gain the ability to stay in focus when changing objective lenses.E) A) and B)
F) A) and C)

Question 3

When transporting the microscope one hand should support the ________ and the other should support the ________.

Accepted Answer

A)  condenser; stage
B)  head; base
C)  arm; base
D)  stage; armE) B) and C)
F) None of the above

Question 4

On what part of the microscope are the objectives lenses located?

Accepted Answer

A)  Body tube
B)  Stage
C)  Base
D)  Rotating nosepieceE) A) and D)
F) A) and C)

Question 5

-The "l" marks the ________.

Accepted Answer

A)  fine adjustment knob
B)  light control
C)  coarse adjustment knob
D)  substage lightE) A) and B)
F) A) and C)

Question 6

You should allow the microscope to cool before storing it because ________.

Accepted Answer

A)  its motor and light are warm and a student could get injured
B)  it is easier to clean when cool
C)  it will extend the life of the expensive bulb
D)  it will prevent the motor from burning outE) B) and C)
F) B) and D)

Question 7

What part of a microscope anchors the objective lens to the head of the microscope?

Accepted Answer

A)  Base
B)  Revolving nosepiece
C)  Arm
D)  StageE) C) and D)
F) B) and D)

Question 8

As total magnification increases, the working distance ________.

Accepted Answer

A)  stays the same
B)  decreases
C)  increasesD) B) and C)
E) A) and B)

Question 9

What part of the microscope regulates the amount of light that passes through the slide?

Accepted Answer

A)  Fine adjustment knob
B)  Condenser
C)  Substage light
D)  Iris diaphragmE) B) and C)
F) A) and B)

Question 10

What variables would you need to calculate the cross-sectional area of a blood vessel?

Accepted Answer

A)  Field diameter
B)  Total magnification.
C)  Both field diameter and total magnification
D)  Neither field diameter nor total magnificationE) None of the above
F) A) and C)

Question 11

Calculate the total magnification of a specimen when using a standard ocular lens and a scanning objective lens.

Accepted Answer

A)  40X
B)  4X
C)  100X
D)  400XE) A) and C)
F) B) and C)

Question 12

Which statement best describes what a letter viewed under the microscope would look like?

Accepted Answer

A)  Same as with the naked eye
B)  Sideways and right to left
C)  Upside down and backward
D)  Upside down, but still left to rightE) C) and D)
F) B) and D)

Question 13

What is the depth of field?

Accepted Answer

A)  The thickness of the specimen that is in sharp focus
B)  How easily focused the specimen is between two different magnifications
C)  The length of the specimen when viewed with the scanning objective lens
D)  How wide the view is through the lensE) B) and C)
F) All of the above

Question 14

If you decrease the total magnification, the depth of the field ________.

Accepted Answer

A)  decreases
B)  stays the same
C)  increasesD) A) and B)
E) A) and C)

Question 15

-Identify the microscope part labeled by the letter "k."

Accepted Answer

A)  Coarse adjustment knob
B)  Substage light
C)  Fine adjustment knob
D)  Iris diaphragm leverE) All of the above
F) C) and D)

Question 16

-The "f" marks the ________.

Accepted Answer

A)  condenser
B)  substage light
C)  iris diaphragm
D)  revolving nosepieceE) B) and C)
F) A) and C)

Question 17

-The "b" marks the ________.

Accepted Answer

A)  objective lens
B)  revolving nosepiece
C)  arm
D)  ocular lensE) A) and D)
F) A) and B)

Question 18

What is the total magnification when using the oil-immersion objective to view a structure?

Accepted Answer

A)  400×
B)  40×
C)  1000×
D)  100×E) B) and D)
F) C) and D)

Question 19

Which objective lens should be used to examine the entire wall of an organ from the exterior to the lumen?

Accepted Answer

A)  Scanning objective
B)  Low power
C)  High power
D)  Oil-immersionE) None of the above
F) A) and B)

Question 20

How would you calculate total magnification?

Accepted Answer

A)  Divide the ocular lens magnification by the objective lens magnification
B)  Multiply magnification of the ocular lens times that of the objective lens
C)  Add together the ocular and objective magnifications
D)  Divide the objective lens magnification by the ocular lens magnificationE) A) and B)
F) B) and C)

Exam 4: The Microscope

As total magnification increases, the working distance ________.

Correct AnswerverifiedShow Answer

If you decrease the total magnification, the depth of the field ________.

Correct AnswerverifiedShow Answer

You should allow the microscope to cool before storing it because ________.

Correct AnswerverifiedShow Answer

On what part of the microscope are the objectives lenses located?

Correct AnswerverifiedShow Answer

How would you calculate total magnification?

Correct AnswerverifiedShow Answer

-The "f" marks the ________.

Correct AnswerverifiedShow Answer

What variables would you need to calculate the cross-sectional area of a blood vessel?

Correct AnswerverifiedShow Answer

What is the total magnification when using the oil-immersion objective to view a structure?

Correct AnswerverifiedShow Answer

What part of the microscope regulates the amount of light that passes through the slide?

Correct AnswerverifiedShow Answer

Which objective lens should be used to examine the entire wall of an organ from the exterior to the lumen?

Correct AnswerverifiedShow Answer

When transporting the microscope one hand should support the ________ and the other should support the ________.

Correct AnswerverifiedShow Answer

Convert 4 mm into μm.

Correct AnswerverifiedShow Answer

-Identify the microscope part labeled by the letter "k."

Correct AnswerverifiedShow Answer

Explain why the field diameter decreases with increasing magnification.

Correct AnswerverifiedShow Answer

-The "l" marks the ________.

Correct AnswerverifiedShow Answer

-The "b" marks the ________.

Correct AnswerverifiedShow Answer

What part of a microscope anchors the objective lens to the head of the microscope?

Correct AnswerverifiedShow Answer

Which statement best describes what a letter viewed under the microscope would look like?

Correct AnswerverifiedShow Answer

What is the depth of field?

Correct AnswerverifiedShow Answer

Calculate the total magnification of a specimen when using a standard ocular lens and a scanning objective lens.

Correct AnswerverifiedShow Answer

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When transporting the microscope one hand should support the and the other should support the .

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