B-1.2 Microscopes: Question Preview (ID: 2442)

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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.

The obective lenses are located on the
a) revolving nosepiece.
b) stage.
c) base.
d) body tube.

The slide is secured in place by the
a) stage clips.
b) slide clips
c) base.
d) revolving nosepiece

To carry a microscope safely, you should
a) put one hand under the base and the hold the arm with the other hand.
b) hold it like a football.
c) put one hand under the stage and grasp the body tube with the other hand.
d) keep it out away from your body.

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.

The main difference between the microscope you used in the lab and an electron microscope is
a) our microscopes use light to illuminate the specimen and electron microscopes use electrons
b) compond light microscopes can magnify much more; up to 500,000 x
c) you can't observe living specimens with a compound light microscope.
d) our microscopes use plain electron beams and electron microscopes use focused beams.

The first person to report seeing living cells through a microscope was
a) Anton von Leewenhoek
b) Robert Hooke
c) Zacharias Jansen
d) Galileo

The person who gave cells their name was
a) Robert Hooke
b) Anton von Leewenhoek
c) Zacharias Jansen
d) Galileo

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) cell theory had been proposed but couldn't be proved until images of cells were available.
c) scientists disagreed on the best way to track the cell cycle.
d) advances in science can only be made following advances in technology.

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

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