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11 Cards in this Set

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instruments used for viewing cells and oother small objects to give an increase in both magnification and resolution.
Transmission electron microscope
Type of microscope that enables observation of very highly magnified images of cell sections.
The additionof a colour to stain compunds in cells that are normally colourless, for identifying them under magnification.
Spontanious generation
Early nineteenth century belief that living things could arise from non-living matter or dead matter.
Simple light microscopes
Light microscopes with only one lense
Technique in which fractured pieces of specimen within a vuccume chamber are exposed to, and partly covered by heavy metal that is evaporated; the metal film refects the contours of the parts that are covered and the parts that are then covered with a layer of carbon atoms that is transperent to electrons. The specimen fragments are dissloved away leaving metal replicators that can be examined with an electron microscope.
Scanning electron microscope
Type of microscope that enables observation of cell and tissue surfaces.
Scanning confocal microscope
Type of microscope that ises laser light to produce in-focus images of successive layers of a specimen.
Measure of ability of a microscope to distinguish fine detail in a specimen; higher resolution means finer detail can be seen.
Phase contrast microscope
Type of microscope that enables observation on unstained, intact living cells.
Oil immersion objective lens
Type of lens that uses oil of the same refractive index as glass, which is placed between the glass slide and the objective ens, reducing the loss of light due to refraction and enabling higher magnifications.