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28 Cards in this Set
- Front
- Back
oculars |
located on the top of a microscope holding the lens, one may include a pointer and/or ruler |
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arm |
aids in transporting the instrument |
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revolving nosepiece |
rotational device allowing the attachment of the objective lens |
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objective lens |
4 different lenses that magnify objects at different magnification |
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stage |
horizontal platform used to hold slides |
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mechanical stage (with knobs and clips) |
secures the slide and allows movement of slide |
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condenser |
just underneath the mechanical stage -focuses light on the object |
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iris diaphragm |
lever projecting off the condenser -controls the level of light passing through the object |
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fine adjustment knob |
small knob located near the base -brings the specimen into sharper focus |
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coarse adjustment knob |
large knob projecting from the arm near the base -lowers and raises the mechanical stage, allowing objects to come in contact with the objective lens |
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light source |
where the light shines through to the specimen |
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on/off switch |
controls the power source of the instrument |
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rheostat |
controls the light source and the amount of light illuminating the specimen |
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scanning objective lens |
red stripe with the "4x" -used to scan the slide to locate specific objects |
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low power objective lens |
yellow stripe with the "10x" -used for closer observation |
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high power objective lens |
blue stripe with the "40x" -used for showing more details |
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oil immersion objective lens |
white stripe with the "100x" -only used with immersion oil -used to show the closest detail |
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hierarchy of life? (atoms-->organism-->biosphere) |
1. atoms 2. molecules 3. organelles 4. cells 5. tissues 6. organs 7. organ systems 8. organisms 9. population 10. communities 11. ecosystems 12. biospheres |
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ubiquitous |
present everywhere |
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nucleolus |
area of ribosome formation |
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ER |
synthesize proteins and other products -forms transport vesicles |
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golgi body |
packages materials to be moved out |
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lysosome |
digestion of damaged organelles, bacteria, other materials |
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mitochondria |
chemicale energy in food --> cellular energy |
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chloroplast |
converts light enegy --> chemical energy |
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central vacuole |
only in plants -water absorbtion and stroage of chemicals or waste products |
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nuclear envelope |
controls passage of materials in and out |
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centrioles |
spindle fibers during replication -only in animals |