Bio 2010 - Microbiology » Spring 2021 » Chapter 4 Quiz
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Question #1
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.
fluorescent
B.
scanning electron
C.
phase contrast
D.
darkfield
Question #2
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 filters in the objective to give contrast to parts of the cell with different thicknesses
C.
Continuously changes the phase of the incident light from the condenser to improve contrast in the specimen.
D.
Uses special lenses to distinguish between solid and liquid phases of the cell
Question #3
Which of the following has the BEST resolution?
A.
differential interference contrast (DIC)
B.
bright field microscopy
C.
Phase contrast
D.
dark field microscopy
E.
none of the above
Question #4
Light of ____ wavelength typically will result in ____ resolving power.
A.
shorter, better
B.
longer, better
C.
any, poor
D.
shorter, worse
Question #5
Which of the following microscope types has the best contrast?
A.
differential interference contrast (DIC)
B.
phase contrast
C.
bright field miscroscopy
D.
dark field miscroscopy
Question #6
A compound light microscope allows clear visualization of objects no smaller than a:
A.
small bacterium
B.
DNA molecule
C.
human cell
D.
typical virus
E.
four leaf clover
Question #7
The kind of electron microscope which is used to study internal structure of cells is:
A.
light microscope
B.
compound microscope
C.
scanning electron microscope
D.
transmission electron microscope
Question #8
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 are less invasive
B.
Electrons do not penetrate the sample.
C.
Electrons have longer wavelengths than light waves
D.
Electrons have shorter wavelengths than light waves
E.
Light waves are less visible.
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.
dark field microscopy
B.
phase contrast microsocpy
C.
fluorescent microscopy
D.
bright field microscopy
E.
electron microscopy
Question #10
Which of the following is used to visualize live cells?
A.
Phase Contrast, SEM and TEM
B.
TEM
C.
SEM
D.
Phase Contrast
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