Exam 2 Practice Questions Flashcards
Which of the following is the smallest unit of measure?
Nano or micro?
Nano
Why are blue filters used on the light source of light microscopes?
they allow for only short wavelengths of light to pass through
Fluorescent microscopy involves
Fluorescent and ultraviolet light
What provides more information than simply revealing cell morphology?
Gram stain
Which type of microscope produces a three dimensional image?
Scanning electron
What dye in the gram stain procedure do gram positive retain
Crystal violet
What does the gram stain reveal
Differential stain reveals cell morphology, arrangement, and cell grouping
Electron beams function
Provide greater resolution than light
Dark field microscopy
Use reflected light
Revels specimen in dark field
Have low numerical aperture
Allow observation of syphilis
