Bio 2010 - Microbiology » Summer 2021 » Chapter 4 Quiz (B)
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Question #1
A compound light microscope allows clear visualization of objects no smaller than a:
A.
typical virus
B.
four leaf clover
C.
DNA molecule
D.
human cell
E.
small bacterium
Question #2
Which of the following microscope types has the best contrast?
A.
phase contrast
B.
bright field miscroscopy
C.
dark field miscroscopy
D.
differential interference contrast (DIC)
Question #3
Which of the following has the BEST resolution?
A.
dark field microscopy
B.
differential interference contrast (DIC)
C.
bright field microscopy
D.
Phase contrast
E.
none of the above
Question #4
Light of ____ wavelength typically will result in ____ resolving power.
A.
shorter, worse
B.
shorter, better
C.
any, poor
D.
longer, better
Question #5
A microscope that exposes specimens to ultraviolet light and forms an image with the light emitted at a different wavelength is called a __________ microscope.
A.
darkfield
B.
fluorescent
C.
scanning electron
D.
phase contrast
Question #6
The transmission electron microscope has the greatest resolving power because it uses an electron beam to view the sample instead of a light beam. The electron beam is used because:
A.
Electrons do not penetrate the sample.
B.
Electrons have longer wavelengths than light waves
C.
Light waves are less visible.
D.
Electrons have shorter wavelengths than light waves
E.
Electrons are less invasive
Question #7
Phase Contrast microscopy is different than bright field microscopy because:
A.
Uses special lenses to change the color of light passing through them.
B.
Uses special lenses to distinguish between solid and liquid phases of the cell
C.
Uses filters in the objective to give contrast to parts of the cell with different thicknesses
D.
Continuously changes the phase of the incident light from the condenser to improve contrast in the specimen.
Question #8
The kind of electron microscope which is used to study internal structure of cells is:
A.
transmission electron microscope
B.
light microscope
C.
scanning electron microscope
D.
compound microscope
Question #9
You want to determine the location of a specific protein in a cell, using a color stain. Which of the following is the BEST type of microscopy to use?
A.
electron microscopy
B.
dark field microscopy
C.
bright field microscopy
D.
phase contrast microsocpy
E.
fluorescent microscopy
Question #10
Which of the following is used to visualize live cells?
A.
Phase Contrast
B.
SEM
C.
All of These
D.
TEM
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