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23 Cards in this Set
- Front
- Back
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Bacteria
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Prokaryotic
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Archaea
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Prokaryotic
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Viruses
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AcellulAR
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Plants
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Eukaryotic
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Animals
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Eukaryotic
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Fungi
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Eukaryotic
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Protozoa
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Eukaryotic
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Achieving Magnification.
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This is the enlargment of an image which can be achieved by using an convex lens. Resolution and contrast are also required for this.
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Achieving Resolution.
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This is the ability to distinguish detail w/in an image. A property of the lens used. Depends on the resolving power.
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Achieving Contrast.
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This is the difference in light intensity, created by absorption. Can be created by staining specimins. A property of the specamin.
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Preparations that must be done to view a microorganism.
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The simplest way is a wet mount or hanging drop mount for extended viewing. Staining helps.
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Compound light microscope.
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These have two lenses (objective and ocular). Both of them are corrected lenses.
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Corrected lenses.
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Several individual lenses bonded together to stop aberrations.
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Aberrations.
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Defects in the image such a color rings or parts of the image out of focus.
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Phase Contrast light micro.
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A light microscope that creates contrast from variations in the refractive index. Uses opaque rings to send light through specemin and around it.
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Darkfield Light Microscope.
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Used to see living unstaned cells but light scattering. A bright image ona dark background. Light misses objective lens. Good for external structure.
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Darkfield Light Microscope.
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Used to see living unstaned cells but light scattering. A bright image ona dark background. Light misses objective lens. Good for external structure.
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Flourensence Microscope.
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This microscope uses flouresence to show contrast. Most specimens must be died with flourochromes.
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Transmission Electron Microscope.
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THis uses a beam of electrons in stead of light, has electromagnetic lenses, uses a flourescent screen, and heavy metals are used instead of staining.
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Scanning Microscope.
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Used to view surfaces that conduct electricity.
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Atomic Force Microscope.
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Used to view biologically important molecules by ulalizing the attractive and repulsive forces between atoms to form an image.
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Pure cultures.
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A single type microorganism froma single type cell. DOesnt exist in nature. Must be steralized to remove all microorganisms and than a single microbial cell is isolated and cultivated to produce aclone.
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How to view a living organism...
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To view this you use a wet mount, it's usually not stained but vital stains can be used.
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