BIOD 171 MODULE 3 EXAM QUESTIONS WITH
CORRECT ANSWERS GRADED A+
What type of cell does the Giemsa stain? - ✅✅White blood cells
What type of samples are acid-fast stains often performed on? - ✅✅Sputum
samples (thick mucus produced in lungs that can be coughed up)
The naked eye can see up to ______ micrometers. - ✅✅100 micrometers
Cellular organelles can be as small as ______ micrometers. - ✅✅0.2
micrometers
Does phase contrast need staining? - ✅✅No
What is the difference between phase contrast compared to brightfield? -
✅✅You are able to visualize things that would otherwise be invisible; cells are
highly distinguishable
What type of microscopy uses lasers? - ✅✅Confocal
, Does electron microscopy use fixation? - ✅✅Yes
Does electron microscopy use live or dead samples? - ✅✅Dead
What type of secondary (counterstain) dye called in gram staining? -
✅✅Safranin
___________________ ______________ microscopy coats samples with gold of
platinum. - ✅✅Scanning electron microscopy
Does negative staining kill the organism and why? - ✅✅No. Since negative
staining is mildly invasive, it may not kill the microorganism.
Who is the father of medicine? - ✅✅Hippocrates
What is microscopy? - ✅✅Use of light or electrons to magnify objects
What are the two measurements of microscopy? - ✅✅Micrometer and
nanometer
Magnification - ✅✅Increase the size of object
CORRECT ANSWERS GRADED A+
What type of cell does the Giemsa stain? - ✅✅White blood cells
What type of samples are acid-fast stains often performed on? - ✅✅Sputum
samples (thick mucus produced in lungs that can be coughed up)
The naked eye can see up to ______ micrometers. - ✅✅100 micrometers
Cellular organelles can be as small as ______ micrometers. - ✅✅0.2
micrometers
Does phase contrast need staining? - ✅✅No
What is the difference between phase contrast compared to brightfield? -
✅✅You are able to visualize things that would otherwise be invisible; cells are
highly distinguishable
What type of microscopy uses lasers? - ✅✅Confocal
, Does electron microscopy use fixation? - ✅✅Yes
Does electron microscopy use live or dead samples? - ✅✅Dead
What type of secondary (counterstain) dye called in gram staining? -
✅✅Safranin
___________________ ______________ microscopy coats samples with gold of
platinum. - ✅✅Scanning electron microscopy
Does negative staining kill the organism and why? - ✅✅No. Since negative
staining is mildly invasive, it may not kill the microorganism.
Who is the father of medicine? - ✅✅Hippocrates
What is microscopy? - ✅✅Use of light or electrons to magnify objects
What are the two measurements of microscopy? - ✅✅Micrometer and
nanometer
Magnification - ✅✅Increase the size of object
