BIOD 171 ESSENTIAL MICROBIOLOGY FINAL PRACTICE SET REVIEW 2026 COMPLETE PAPER GRADED A+

BIOD 171 ESSENTIAL MICROBIOLOGY
FINAL PRACTICE SET REVIEW 2026
COMPLETE PAPER GRADED A+

⩥ Simple staining uses __________ dye.
Answer: Positively charged


⩥ Acid fast stain is used for...
Answer: bacteria resistant to traditional staining; mostly for
mycobacterium tuberculosis


⩥ Resolution
Answer: distance between two objects at which the objects can still be
seen as separate


⩥ Contrast
Answer: difference in light absorbance between 2 areas


⩥ Dark field microscopy light
Answer: reflects light off of specimen at an angle


⩥ Can you see intracellular structures with a dark field microscope?

, Answer: No


⩥ What microscope can capture in 3-D?
Answer: Confocal


⩥ What are the two types of electron microscopes?
Answer: transmission electron microscope (TEM) and scanning electron
microscope (SEM)


⩥ What is the difference between TEM and SEM?
Answer: TEM passes through the sample, SEM reflects off the surface


⩥ Gram staining was developed by
Answer: Hans Christian Gram in 1884


⩥ Gram-positive bacteria shows that
Answer: there is a thick peptidoglycan cell wall


⩥ What color will gram positive bacteria stain?
Answer: purple


⩥ What color will gram negative bacteria stain?