1|Page
MICROBIOLOGY EXAM 1 | COMPLETE QUESTIONS
AND ANSWERS | 2026 LATEST UPDATED
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
pg. 1
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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
pg. 2
, 3|Page
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
b) resolution
c) focusing
d) refraction
e) phase contrast
b) confocal microscopy ......ANSWER......Microscopy that combines
laser technology with fluorescence is called
a) phase contrast microscopy
pg. 3
MICROBIOLOGY EXAM 1 | COMPLETE QUESTIONS
AND ANSWERS | 2026 LATEST UPDATED
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
pg. 1
,2|Page
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
pg. 2
, 3|Page
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
b) resolution
c) focusing
d) refraction
e) phase contrast
b) confocal microscopy ......ANSWER......Microscopy that combines
laser technology with fluorescence is called
a) phase contrast microscopy
pg. 3
