LABORATORY TEST ONE: MICROSCOPY 1. ________ holds the ocular lens 2. ________ the lens closest to the eye 3. ________ separates the ocular and objective lenses 4. ________ holds the objective lenses, allows us to change them easily 5. ________ the objective lens that magnifies the object 4x 6. ________ the objective lens that magnifies the object 10x 7. ________ the objective lens that magnifies the object 40x 8. ________ holds the specimen for viewing 9. ________ keeps the microscope slide in place 10. ________ used to focus initially under low power 11. ________ used to refine the focus 12. ________ controls the amount of light that passes through the specimen 13. ________ holds the body tube and stage 14. ________ supports the microscope, allows us to rest it on a table, etc. A. ARM B. BASE C. BODY TUBE D. COARSE ADJUSTMENT E. DIAPHRAGM F. EYEPIECE G. FINE ADJUSTMENT H. HIGH POWER I. LIGHT SOURCE J. LOW POWER K. MEDIUM POWER L. NOSEPIECE M. OCULAR LENS N. STAGE O. STAGE CLIPS
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A. used for precise focusing B. lower support of microscope C. narrows beam of light D. hole in stage E. used only at low power F. has knobs to move slide G. special paper for cleaning H. eyepiece I. holds ocular lens J. lens attached to nosepiece ocular lens aperture body tube mechanical stage fine adjustment knob base objective lens coarse adjustment knob condenser lens paper
Madhur L.
The microscope slide rests on the base while being viewed. The iris condenser is located on the stage. Your lab microscope is parfocal. What does this mean? a. The specimen is clearly in focus at this depth. b. The slide should be almost in focus when changing to higher magnifications. You can easily discriminate two close objects as separate. If the ocular lens magnifies a specimen 10X, and the objective lens used magnifies the specimen 35X, what is the total magnification being used to observe the specimen? How do you clean the lenses of your microscope? with a paper towel b. with soap and water c. with special lens paper and cleaner. Circle True or False. You should always begin observation of specimens with the oil immersion lens.
Jennifer H.
1. Eyepiece: This part holds the objective lenses and is able to rotate to change magnification. This part of the microscope adjusts the amount of light that reaches the specimen (1 = least to 5 = most). 2. Base: 3. Nosepiece: C - This part moves the stage slightly to help you sharpen or "fine" tune your view of the specimen. Stage: Where you look into the microscope. This part allows you to view the image on the stage and contains the ocular lens. 5. Coarse Adjustment Knob: E - This part is used to support the microscope when carried. Diaphragm: Part of the microscope that supports the slide being viewed. 6 - These are used to hold the slide into place. 7. Stage Clips: 8. Fine Adjustment Knob: H - The bottom part of the microscope. 9. Objective Lenses: I - This part of the microscope is found on the nosepiece and ranges from low to high power. 10. Arm: J - This part moves the stage up and down to help you get the specimen into view. This part of the microscope projects light upwards to allow you to see the specimen. 11. Light Source.
Dominador T.
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