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B-1.2 Microscopes
Test Description: Identify parts, safe use of,and brief history of microscopes. Identify major differences between compound light and electron microscopes.
Instructions: Answer all questions to get your test result.
1) The part of the microscope that is adusted to change the amount of light coming through the specimen is
A
the diaphragm.
B
the fine adustment knob.
C
the eyepiece.
D
the stage clips.
2) The obective lenses are located on the
A
stage.
B
body tube.
C
base.
D
revolving nosepiece.
3) The slide is secured in place by the
A
revolving nosepiece
B
base.
C
slide clips
D
stage clips.
4) To carry a microscope safely, you should
A
put one hand under the base and the hold the arm with the other hand.
B
put one hand under the stage and grasp the body tube with the other hand.
C
keep it out away from your body.
D
hold it like a football.
5) The total magnification of the microscope =
A
the magnification of the objective x the magnification of the eyepiece.
B
the magnification of the obective x the magnification of the fine adjustment
C
the magnification of the obective + the magnification of the fine adjustment
D
the magnification of the objective + the magnification of the eyepiece.
6) The main difference between the microscope you used in the lab and an electron microscope is
A
you can't observe living specimens with a compound light microscope.
B
compond light microscopes can magnify much more; up to 500,000 x
C
our microscopes use light to illuminate the specimen and electron microscopes use electrons
D
our microscopes use plain electron beams and electron microscopes use focused beams.
7) The first person to report seeing living cells through a microscope was
A
Anton von Leewenhoek
B
Robert Hooke
C
Zacharias Jansen
D
Galileo
8) The person who gave cells their name was
A
Robert Hooke
B
Galileo
C
Anton von Leewenhoek
D
Zacharias Jansen
9) The invention of the microscope was essential to development of the cell theory because
A
scientist's didn't know anything about cells until microscopes made them visable.
B
scientists disagreed on the best way to track the cell cycle.
C
advances in science can only be made following advances in technology.
D
cell theory had been proposed but couldn't be proved until images of cells were available.
10) If you wanted a 3-D image of a living cell at 100,000x magnification, you'd use
A
an STM
B
a compound light microscope
C
a TEM
D
an ATV
*select an answer for all questions
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