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Bio Lab
Little Rooms
30
Biology
Undergraduate 1
09/24/2012

Additional Biology Flashcards

 


 

Cards

Term
The proper way to hold a microscope.
Definition
One hand under the base and one grasping the arm.
Term
Body Tube
Definition
Assures alignment of objective and ocular lenses.
Term
Arm
Definition
supports the body tube and coarse adjustment knob.
Term
Ocular Lenses
Definition
Eyepiece which contains 10x magnification lenses
Term
Compound Microscope
Definition
Microscopes that contain two pairs of lenses: ocular and objective.
Term
Objectives
Definition
contains lenses of different magnifications.
Term
Revolving Nosepiece
Definition
allows interchange of objective lenses.
Term
Oculars magnify objects to
Definition
10x
Term
Scanning power
Definition
4x
Term
Low power
Definition
10x
Term
High power
Definition
40x
Term
Oil immersion
Definition
100x
Term
Binocular
Definition
Two ocular lenses.
Term
Interpupillary Distance
Definition
The measurement you adjust on the oculars to fit your eyes.
Term
Coarse adjustment knob
Definition
Moves stage up and down for greater changes in focus
Term
Field of view
Definition
The small, circular plot you can see through the lenses.
Term
Fine adjustment knob
Definition
moves stage up and down for smaller adjustments in focus.
Term
Images in a microscope appear
Definition
upside down and backwards.
Term
Substage condenser
Definition
focuses light onto specimen
Term
Iris diaphragm
Definition
controls the amount of light passing through the specimen
Term
Parfocal
Definition
An object that is in focus on one magnification will remain in focus when switched to other magnifications.
Term
Parcentral
Definition
The fields of view on all magnifications have the same center.
Term
As magnification increases...
Definition
...field size decreases proportionally.
Term
Formula for calculating field diameters
Definition
Mag scan A x field diameter A = mag scan B x field diameter B
Term
Cyclosis
Definition
The circulation or streaming of cytoplasm around a cell.
Term
What caused the Elodea cells to react the way they did?
Definition
The water has been taken away, so the membrane has pulled away from the cell.
Term
Mechanical stage
Definition
supports slide over opening that admits light from illuminator
Term
Base
Definition
firm support that bears weight of the microscope
Term
In-base illuminator
Definition
Directs light upward through the diaphragm and stage aperture.
Term
Stage clips
Definition
holds slide firmly in place.
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