Emory Bio 141 Lab Exam 1 Bold
Terms/Microscope Parts (Edited: Now
includes random lab facts)
condenser lens - ANSWER-microscope: located immediately below the specimen,
focuses light from the light source (lamp) through the specimen to be viewed
lamp - ANSWER-microscope: provides the light needed to view the specimen
iris diaphragm - ANSWER-microscope: controls the width of the circle of light and,
therefore, the amount of light passing through the specimen.
revolving turret - ANSWER-microscope: if microscope has phase-contrast optics, the
condenser may be housed here, big 'ol circle under stage
brightfield microscopy - ANSWER-microscope: "normal" optical arrangement, when
revolving turret is set on 0
bar graph - ANSWER-graph in which the numerical values of variables are represented
by the height or length of lines or rectangles of equal width.
prokaryotic cell - ANSWER-earliest known cells; lack nuclei and membrane-bound
organelles
eukaryotic cell - ANSWER-have a nucleus and other membrane-bound organelles
compound microscope - ANSWER-microscope: a light microscope that uses two or
more lenses to magnify an object
binocular microscopes - ANSWER-microscopes that contain two eyepieces
monocular microscope - ANSWER-microscopes that contain only one eyepiece
head - ANSWER-microscope: supports the objective lenses and ocular lenses
ocular - ANSWER-microscope: lens in the eyepiece (typically 10X)
interpupillary distance - ANSWER-microscope: distance between the eyepieces
(binocular microscope)
, hypothesis - ANSWER-proposed explanation to a question that can be tested
dependent variable - ANSWER-the variable that is measured/observed
independent variable - ANSWER-the variable that is manipulated/changed
controlled variable - ANSWER-variable that is kept constant
procedure - ANSWER-a sequence of steps involved in performing an experiment
level of treatment - ANSWER-value set for the independent variable
prediction - ANSWER-if (hypothesis) , then (expected observation) statement
line graph - ANSWER-graph that uses line segments to show changes that occur over
time
field of view - ANSWER-microscope: circle of light that one sees in the microscope
revolving nosepiece - ANSWER-microscope: holds and turns the objectives into viewing
position
scanning objective - ANSWER-microscope: shortest lens, typically 4X magnification
intermediate objective - ANSWER-microscope: typically 10X magnification
high-power objective - ANSWER-microscope: 40x magnification
oil immersion objective - ANSWER-microscope: 100x magnification
arm - ANSWER-microscope: Used to support the stage and condenser lens (part you
use to carry)
phase-contrast - ANSWER-microscope: revolving turret setting must correspond to the
magnifying power of the objective being used
stage - ANSWER-microscope: supports the slide being viewed
stage adjustment knobs - ANSWER-microscope: used to move the slide on a
mechanical stage in vertical and horizontal directions
coarse focus adjustment knob - ANSWER-microscope: greatly changes the distance
between the stage and the objective
fine focus adjustment knob - ANSWER-microscope: slightly changes the distance
between the stage and the objective
Terms/Microscope Parts (Edited: Now
includes random lab facts)
condenser lens - ANSWER-microscope: located immediately below the specimen,
focuses light from the light source (lamp) through the specimen to be viewed
lamp - ANSWER-microscope: provides the light needed to view the specimen
iris diaphragm - ANSWER-microscope: controls the width of the circle of light and,
therefore, the amount of light passing through the specimen.
revolving turret - ANSWER-microscope: if microscope has phase-contrast optics, the
condenser may be housed here, big 'ol circle under stage
brightfield microscopy - ANSWER-microscope: "normal" optical arrangement, when
revolving turret is set on 0
bar graph - ANSWER-graph in which the numerical values of variables are represented
by the height or length of lines or rectangles of equal width.
prokaryotic cell - ANSWER-earliest known cells; lack nuclei and membrane-bound
organelles
eukaryotic cell - ANSWER-have a nucleus and other membrane-bound organelles
compound microscope - ANSWER-microscope: a light microscope that uses two or
more lenses to magnify an object
binocular microscopes - ANSWER-microscopes that contain two eyepieces
monocular microscope - ANSWER-microscopes that contain only one eyepiece
head - ANSWER-microscope: supports the objective lenses and ocular lenses
ocular - ANSWER-microscope: lens in the eyepiece (typically 10X)
interpupillary distance - ANSWER-microscope: distance between the eyepieces
(binocular microscope)
, hypothesis - ANSWER-proposed explanation to a question that can be tested
dependent variable - ANSWER-the variable that is measured/observed
independent variable - ANSWER-the variable that is manipulated/changed
controlled variable - ANSWER-variable that is kept constant
procedure - ANSWER-a sequence of steps involved in performing an experiment
level of treatment - ANSWER-value set for the independent variable
prediction - ANSWER-if (hypothesis) , then (expected observation) statement
line graph - ANSWER-graph that uses line segments to show changes that occur over
time
field of view - ANSWER-microscope: circle of light that one sees in the microscope
revolving nosepiece - ANSWER-microscope: holds and turns the objectives into viewing
position
scanning objective - ANSWER-microscope: shortest lens, typically 4X magnification
intermediate objective - ANSWER-microscope: typically 10X magnification
high-power objective - ANSWER-microscope: 40x magnification
oil immersion objective - ANSWER-microscope: 100x magnification
arm - ANSWER-microscope: Used to support the stage and condenser lens (part you
use to carry)
phase-contrast - ANSWER-microscope: revolving turret setting must correspond to the
magnifying power of the objective being used
stage - ANSWER-microscope: supports the slide being viewed
stage adjustment knobs - ANSWER-microscope: used to move the slide on a
mechanical stage in vertical and horizontal directions
coarse focus adjustment knob - ANSWER-microscope: greatly changes the distance
between the stage and the objective
fine focus adjustment knob - ANSWER-microscope: slightly changes the distance
between the stage and the objective
