Microbiology Exam 1 Questions
a) the magnification increases - Answer-As an objective lens of a compound light microscope gets
longer,
a) the magnification increases
b) the angle of light detected decreases
c) the higher the resolution
d) ALL of the above
e) TWO of the above
e) TWO of these - Answer-Which of the following is a simple stain in the gram-staining procedure?
a) idoine
b) safranin
c) crystal violet
d) ALL of these
e) TWO of these
d) fixation - Answer-The process of holding cell together and attaching them to the microscope slide is
called
a) simple staining
b) differential staining
c) mordanization
d) fixation
e) decolorization
, b) condensor - Answer-In microscopy, the lens or that focuses the illumination source at the sample is
called
a) refractive lens
b) condensor
c) objective
d) magnifier lens
e) ocular
e) 200 nanometers - Answer-The light microscope can resolve structures as close together as
a) 10 micrometers
b) 1 micrometer
c) 0.2 nanometers
d) 0.3 millimeters
e) 200 nanometers
b) the wavelength of the illuminating beam is much shorter than that of visible light - Answer-The
electron microscope is capable of visualizing smaller and closer together structures than the light
microscope because
a) the wavelength of the illuminating beam is much longer than that of visible light
b) the wavelength of the illuminating beam is much shorter than that of visible light
c) the distance between the lens and the specimen is greatly reduced
d) the distance between the lens and the specimen is lengthened greatly
e) TWO of these are correct
d) refraction - Answer-When light changes direction as it passes through a lens it is called
a) interference
a) the magnification increases - Answer-As an objective lens of a compound light microscope gets
longer,
a) the magnification increases
b) the angle of light detected decreases
c) the higher the resolution
d) ALL of the above
e) TWO of the above
e) TWO of these - Answer-Which of the following is a simple stain in the gram-staining procedure?
a) idoine
b) safranin
c) crystal violet
d) ALL of these
e) TWO of these
d) fixation - Answer-The process of holding cell together and attaching them to the microscope slide is
called
a) simple staining
b) differential staining
c) mordanization
d) fixation
e) decolorization
, b) condensor - Answer-In microscopy, the lens or that focuses the illumination source at the sample is
called
a) refractive lens
b) condensor
c) objective
d) magnifier lens
e) ocular
e) 200 nanometers - Answer-The light microscope can resolve structures as close together as
a) 10 micrometers
b) 1 micrometer
c) 0.2 nanometers
d) 0.3 millimeters
e) 200 nanometers
b) the wavelength of the illuminating beam is much shorter than that of visible light - Answer-The
electron microscope is capable of visualizing smaller and closer together structures than the light
microscope because
a) the wavelength of the illuminating beam is much longer than that of visible light
b) the wavelength of the illuminating beam is much shorter than that of visible light
c) the distance between the lens and the specimen is greatly reduced
d) the distance between the lens and the specimen is lengthened greatly
e) TWO of these are correct
d) refraction - Answer-When light changes direction as it passes through a lens it is called
a) interference
