Question 1

The microscope field is the ________.

Accepted Answer

A)  platform on which the slide rests
B)  area you see through the lenses of the microscope
C)  space near the microscope where you sit
D)  area in which you place the microscope

Question 2

You have learned that the objective lens magnifies the object on the slide, producing the________ image, and that the ocular lens magnifies that image, forming the________ image.

Accepted Answer

A)  ocular, objective
B)  objective, real
C)  real, virtual
D)  virtual, ocular C

Question 3

The working distance for a 10× objective lens is________ .

Accepted Answer

A)  much less than the working distance for the 100× objective lens
B)  a little bit less than the working distance for the 100× objective lens
C)  a little bit greater than the working distance for the 100× objective lens
D)  much greater than the working distance for the 100× objective lens

Question 4

As you examine the tissue on your slide, you switch to a greater magnification to increase the size of the cells you see. You _________ the light intensity to see better at the greater magnification.

Accepted Answer

A)  make no adjustment to
B)  decrease
C)  increase

Question 5

As total magnification increases, the depth of field________ .

Accepted Answer

A)  increases
B)  decreases
C)  remains the same

Question 6

You begin your observations using the________ lens and the ________adjustment knob.

Accepted Answer

A)  highest- power, fine
B)  lowest- power, coarse
C)  midrange- power, fine
D)  midrange- power, coarse

Question 7

The ________is a substage lens that concentrates light on the specimen.

Accepted Answer

A)  light source
B)  condenser
C)  iris diaphragm lever
D)  objective lens B

Question 8

You are looking at a slide of three crossed threads. Yellow is on the bottom, blue is in the middle, and red is on the top. When you rotate the adjustment knob forward (away from you) on your microscope, the stage rises. You move the adjustment knob to focus on the middle thread. As you rotate the adjustment knob forward, which color thread will come into focus next?

Accepted Answer

A)  red
B)  blue
C)  yellow

Question 9

The total magnification of an object can be found by _________ .

Accepted Answer

A)  dividing the power of the objective lens by the power of the ocular lens
B)  multiplying the power of the objective lens by the number of objective lenses on your microscope
C)  multiplying the power of the objective lens by the power of the ocular lens
D)  adding the power of the objective lens and the power of the ocular lens

Question 10

As you increase the total magnification of the specimen, the size of the field _________.

Accepted Answer

A)  increases
B)  decreases
C)  remains the same

Question 11

This is the formula for calculating the diameter of an unknown microscope field.

Accepted Answer

A)  diameter of field A × total magnification of field A = diameter of field B × total magnification of field B
B)  diameter of field A + total magnification of field A = diameter of field B + total magnification of field B
C)  diameter of field A + diameter of field B = total magnification of field A + total magnification of field B
D)  diameter of field A × diameter of field B = total magnification of field A × total magnification of field B

Question 12

With the higher power objective lenses, use only this knob to focus.

Accepted Answer

A)  fine adjustment knob
B)  iris diaphragm lever
C)  course adjustment knob

Question 13

If your ocular lens is 10×, and you are using your 45× objective lens to view a slide, the total magnification is________ .

Accepted Answer

A)  250×
B)  55×
C)  90×
D)  450×

Question 14

Microscope specimens have depth, as well as length and width. If you are focused on the middle layer of cells and wish to see the top layer of cells clearly, you should move the________ .

Accepted Answer

A)  slide toward or away from you
B)  slide to the left or right
C)  lens further away from the slide
D)  lens closer to the slide

Question 15

If the diameter of your microscope field is 1 mm at low power (10×) and your ocular lens is 10×, then what is the diameter of your field when you switch to the 50× objective lens?

Accepted Answer

A)  0.02 mm
B)  0.2 mm
C)  0.002 mm
D)  2 mm B

Question 16

You prepare a wet mount of your own cheek cells and place it under the microscope, but find that you cannot see any detail of the cells. What can you do to make details more visible?

Accepted Answer

A)  increase light intensity
B)  prepare another slide and stain with methylene blue
C)  view at a higher power
D)  view at a lower power

Question 17

When you want to study a slide under the microscope, you place it on the________ .

Accepted Answer

A)  arm
B)  stage
C)  head
D)  base

Question 18

The________ of the microscope carries three or four objective lenses.

Accepted Answer

A)  arm
B)  base
C)  ocular
D)  nosepiece

Question 19

When studying a slide in a microscope, begin focusing with the ________- power objective lens in place.

Accepted Answer

A)  highest
B)  midrange
C)  lowest

Question 20

You are looking at very lightly stained cells under the microscope, and you want to increase the contrast so that you can see them "better." You _________ the iris diaphragm to ________the light.

Accepted Answer

A)  open, increase
B)  open, dim
C)  close, increase
D)  close, dim

Exam 3: The Microscope

The microscope field is the ________.

Correct Answer
verified

You have learned that the objective lens magnifies the object on the slide, producing the image, and that the ocular lens magnifies that image, forming the image.

Correct Answer
verified
C

The working distance for a 10× objective lens is________ .

Correct Answer
verified

As you examine the tissue on your slide, you switch to a greater magnification to increase the size of the cells you see. You _________ the light intensity to see better at the greater magnification.

Correct Answer
verified

As total magnification increases, the depth of field________ .

Correct Answer
verified

You begin your observations using the lens and the adjustment knob.

Correct Answer
verified

The ________is a substage lens that concentrates light on the specimen.

Correct Answer
verified
B

Correct Answer
verified

The total magnification of an object can be found by _________ .

Correct Answer
verified

As you increase the total magnification of the specimen, the size of the field _________.

Correct Answer
verified

This is the formula for calculating the diameter of an unknown microscope field.

Correct Answer
verified

With the higher power objective lenses, use only this knob to focus.

Correct Answer
verified

If your ocular lens is 10×, and you are using your 45× objective lens to view a slide, the total magnification is________ .

Correct Answer
verified

Microscope specimens have depth, as well as length and width. If you are focused on the middle layer of cells and wish to see the top layer of cells clearly, you should move the________ .

Correct Answer
verified

If the diameter of your microscope field is 1 mm at low power (10×) and your ocular lens is 10×, then what is the diameter of your field when you switch to the 50× objective lens?

Correct Answer
verified
B

You prepare a wet mount of your own cheek cells and place it under the microscope, but find that you cannot see any detail of the cells. What can you do to make details more visible?

Correct Answer
verified

When you want to study a slide under the microscope, you place it on the________ .

Correct Answer
verified

The________ of the microscope carries three or four objective lenses.

Correct Answer
verified

When studying a slide in a microscope, begin focusing with the ________- power objective lens in place.

Correct Answer
verified

You are looking at very lightly stained cells under the microscope, and you want to increase the contrast so that you can see them "better." You _ the iris diaphragm to the light.

Correct Answer
verified

Exam 3: The Microscope

The microscope field is the ________.

Correct AnswerverifiedShow Answer

You have learned that the objective lens magnifies the object on the slide, producing the________ image, and that the ocular lens magnifies that image, forming the________ image.

Correct AnswerverifiedC

The working distance for a 10× objective lens is________ .

Correct AnswerverifiedShow Answer

As you examine the tissue on your slide, you switch to a greater magnification to increase the size of the cells you see. You _________ the light intensity to see better at the greater magnification.

Correct AnswerverifiedShow Answer

As total magnification increases, the depth of field________ .

Correct AnswerverifiedShow Answer

You begin your observations using the________ lens and the ________adjustment knob.

Correct AnswerverifiedShow Answer

The ________is a substage lens that concentrates light on the specimen.

Correct AnswerverifiedB

Correct AnswerverifiedShow Answer

The total magnification of an object can be found by _________ .

Correct AnswerverifiedShow Answer

As you increase the total magnification of the specimen, the size of the field _________.

Correct AnswerverifiedShow Answer

This is the formula for calculating the diameter of an unknown microscope field.

Correct AnswerverifiedShow Answer

With the higher power objective lenses, use only this knob to focus.

Correct AnswerverifiedShow Answer

If your ocular lens is 10×, and you are using your 45× objective lens to view a slide, the total magnification is________ .

Correct AnswerverifiedShow Answer

Microscope specimens have depth, as well as length and width. If you are focused on the middle layer of cells and wish to see the top layer of cells clearly, you should move the________ .

Correct AnswerverifiedShow Answer

If the diameter of your microscope field is 1 mm at low power (10×) and your ocular lens is 10×, then what is the diameter of your field when you switch to the 50× objective lens?

Correct AnswerverifiedB

You prepare a wet mount of your own cheek cells and place it under the microscope, but find that you cannot see any detail of the cells. What can you do to make details more visible?

Correct AnswerverifiedShow Answer

When you want to study a slide under the microscope, you place it on the________ .

Correct AnswerverifiedShow Answer

The________ of the microscope carries three or four objective lenses.

Correct AnswerverifiedShow Answer

When studying a slide in a microscope, begin focusing with the ________- power objective lens in place.

Correct AnswerverifiedShow Answer

You are looking at very lightly stained cells under the microscope, and you want to increase the contrast so that you can see them "better." You _________ the iris diaphragm to ________the light.

Correct AnswerverifiedShow Answer

Correct Answer
verified

You have learned that the objective lens magnifies the object on the slide, producing the image, and that the ocular lens magnifies that image, forming the image.

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

You begin your observations using the lens and the adjustment knob.

Correct Answer
verified

Correct Answer
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B

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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B

Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

You are looking at very lightly stained cells under the microscope, and you want to increase the contrast so that you can see them "better." You _ the iris diaphragm to the light.

Correct Answer
verified