BIOL 211 Lab Exam 1 || with Error-free Answers.
resolving power correct answers d=0.5 um / 2NA
Where do you find NA? correct answers on the objective lens
Given: d=1
If you had two cocci that are 1 um wide but 0.5 um apart, will you see 1 or 2 cocci? correct
answers 1 cocci
As resolving power decreases, resolution _________ and working distance ____________.
correct answers increases, decreases
What is the function of the lamp? correct answers source of visible light
What is the function of the lamp diaphragm? correct answers control amount of light
What is the function of the condenser diaphragm? correct answers controls amount of light set
"frying pan handle" to 2
What is the function of the condenser lens? correct answers focusses light on the object
What is the function of the condenser lens adjustment knob? correct answers raises and lowers
the condenser lens
What is the function of the centering screws? correct answers center the light within the field of
view
What is the function of the stage? correct answers holds glass slide with specimen via stage clips
, What is the function of the stage adjustment knob? correct answers positions the specimen over
the hole in the stage
What is the function of the revolving nosepiece? correct answers contains 4X, 10X, 40X, and
100X objective lenses
What is the function of the objective lens? correct answers 1st magnification of specimen,
magnifies the specimen to form a real image
What is the function of the ocular lens? correct answers 2nd magnification of specimen,
magnifies the real image to form a virtual image
What is the function of the course and fine focusing knob? correct answers brings image into
focus
What would be disposed in the biohazard bag? correct answers plastic petri dish cultures
How would you dispose a test tube culture? correct answers right side up with plastic cap in
place in the basket, with all labels removed
What would be disposed of in the sharps container? correct answers broken glass, cotton swabs,
dirty slides
Where do you discard pipettes? correct answers in the amphyl disinfectant, tip down
Describe how bacterial pigments determine water solubility. correct answers water soluble: the
bacterial pigment diffuses in the water of the agar turning the agar a different color
water insoluble: the pigment does not diffuse into the agar
resolving power correct answers d=0.5 um / 2NA
Where do you find NA? correct answers on the objective lens
Given: d=1
If you had two cocci that are 1 um wide but 0.5 um apart, will you see 1 or 2 cocci? correct
answers 1 cocci
As resolving power decreases, resolution _________ and working distance ____________.
correct answers increases, decreases
What is the function of the lamp? correct answers source of visible light
What is the function of the lamp diaphragm? correct answers control amount of light
What is the function of the condenser diaphragm? correct answers controls amount of light set
"frying pan handle" to 2
What is the function of the condenser lens? correct answers focusses light on the object
What is the function of the condenser lens adjustment knob? correct answers raises and lowers
the condenser lens
What is the function of the centering screws? correct answers center the light within the field of
view
What is the function of the stage? correct answers holds glass slide with specimen via stage clips
, What is the function of the stage adjustment knob? correct answers positions the specimen over
the hole in the stage
What is the function of the revolving nosepiece? correct answers contains 4X, 10X, 40X, and
100X objective lenses
What is the function of the objective lens? correct answers 1st magnification of specimen,
magnifies the specimen to form a real image
What is the function of the ocular lens? correct answers 2nd magnification of specimen,
magnifies the real image to form a virtual image
What is the function of the course and fine focusing knob? correct answers brings image into
focus
What would be disposed in the biohazard bag? correct answers plastic petri dish cultures
How would you dispose a test tube culture? correct answers right side up with plastic cap in
place in the basket, with all labels removed
What would be disposed of in the sharps container? correct answers broken glass, cotton swabs,
dirty slides
Where do you discard pipettes? correct answers in the amphyl disinfectant, tip down
Describe how bacterial pigments determine water solubility. correct answers water soluble: the
bacterial pigment diffuses in the water of the agar turning the agar a different color
water insoluble: the pigment does not diffuse into the agar
