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.
DNA molecule
B.
four leaf clover
C.
typical virus
D.
human cell
E.
small bacterium
Question #2
Which of the following microscope types has the best contrast?
A.
differential interference contrast (DIC)
B.
bright field miscroscopy
C.
phase contrast
D.
dark field miscroscopy
Question #3
Which of the following has the BEST resolution?
A.
differential interference contrast (DIC)
B.
Phase contrast
C.
dark field microscopy
D.
bright field microscopy
E.
none of the above
Question #4
Light of ____ wavelength typically will result in ____ resolving power.
A.
any, poor
B.
longer, better
C.
shorter, worse
D.
shorter, 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.
phase contrast
B.
scanning electron
C.
darkfield
D.
fluorescent
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 have longer wavelengths than light waves
B.
Electrons do not penetrate the sample.
C.
Electrons are less invasive
D.
Light waves are less visible.
E.
Electrons have shorter wavelengths than light waves
Question #7
Phase Contrast microscopy is different than bright field microscopy because:
A.
Continuously changes the phase of the incident light from the condenser to improve contrast in the specimen.
B.
Uses special lenses to change the color of light passing through them.
C.
Uses filters in the objective to give contrast to parts of the cell with different thicknesses
D.
Uses special lenses to distinguish between solid and liquid phases of the cell
Question #8
The kind of electron microscope which is used to study internal structure of cells is:
A.
compound microscope
B.
light microscope
C.
scanning electron microscope
D.
transmission electron 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.
phase contrast microsocpy
C.
bright field microscopy
D.
fluorescent microscopy
E.
dark field microscopy
Question #10
Which of the following is used to visualize live cells?
A.
Phase Contrast
B.
All of These
C.
TEM
D.
SEM
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