Portage Learning BIOD 171 Module 3
Exam Questions And Answers
Does phase contrast microscopy require staining? - - correct answer
✅No
Simple staining is used mostly for... - - correct answer ✅A quick
observance
Simple staining uses __________ dye. - - correct answer
✅Positively charged
Acid fast stain is used for... - - correct answer ✅bacteria resistant
to traditional staining; mostly for mycobacterium tuberculosis
Resolution - - correct answer ✅distance between two objects at
which the objects can still be seen as separate
Contrast - - correct answer ✅difference in light absorbance
between 2 areas
Dark field microscopy light - - correct answer ✅reflects light off of
specimen at an angle
, Portage Learning BIOD 171 Module 3
Exam Questions And Answers
Can you see intracellular structures with a dark field microscope? - -
correct answer ✅No
What microscope can capture in 3-D? - - correct answer ✅Confocal
What are the two types of electron microscopes? - - correct answer
✅transmission electron microscope (TEM) and scanning electron
microscope (SEM)
What is the difference between TEM and SEM? - - correct answer
✅TEM passes through the sample, SEM reflects off the surface
Gram staining was developed by - - correct answer ✅Hans
Christian Gram in 1884
Gram-positive bacteria shows that - - correct answer ✅there is a
thick peptidoglycan cell wall
What color will gram positive bacteria stain? - - correct answer
✅purple
Exam Questions And Answers
Does phase contrast microscopy require staining? - - correct answer
✅No
Simple staining is used mostly for... - - correct answer ✅A quick
observance
Simple staining uses __________ dye. - - correct answer
✅Positively charged
Acid fast stain is used for... - - correct answer ✅bacteria resistant
to traditional staining; mostly for mycobacterium tuberculosis
Resolution - - correct answer ✅distance between two objects at
which the objects can still be seen as separate
Contrast - - correct answer ✅difference in light absorbance
between 2 areas
Dark field microscopy light - - correct answer ✅reflects light off of
specimen at an angle
, Portage Learning BIOD 171 Module 3
Exam Questions And Answers
Can you see intracellular structures with a dark field microscope? - -
correct answer ✅No
What microscope can capture in 3-D? - - correct answer ✅Confocal
What are the two types of electron microscopes? - - correct answer
✅transmission electron microscope (TEM) and scanning electron
microscope (SEM)
What is the difference between TEM and SEM? - - correct answer
✅TEM passes through the sample, SEM reflects off the surface
Gram staining was developed by - - correct answer ✅Hans
Christian Gram in 1884
Gram-positive bacteria shows that - - correct answer ✅there is a
thick peptidoglycan cell wall
What color will gram positive bacteria stain? - - correct answer
✅purple
