Whether specimens need to be thick depends on the context and purpose of the study. In some cases, thicker specimens may provide better structural integrity or more detailed analysis, particularly in microscopy or histology. However, for other applications, thinner specimens may be preferred for better visibility or to facilitate certain types of measurements. Ultimately, the thickness required is determined by the specific requirements of the experiment or analysis being conducted.
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Aliquot specimens are portions of a sample that are divided for various laboratory tests or analyses. By dividing a sample into aliquots, multiple tests can be performed without the need for separate samples. This helps ensure consistency and accuracy in test results.
True. When a slide is thick, only certain parts of the specimen may come into focus due to the limited depth of field of the microscope. Adjusting the focus may help bring different parts of the specimen into clear view.
Direct methods of studying unstained specimens include brightfield microscopy, phase contrast microscopy, and darkfield microscopy. These techniques utilize the inherent properties of the specimen to create contrast and allow for visualization without the need for staining.
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In science class, we looked at many different types of specimen.
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True
R25 can be many different thicknesses. It depends on the insulation product. Styrofoam SM would need to be 5" thick. Pink fiberglass would need to be about 7" thick. White (beadboard) styrofoam would need to be about 6.75" thick. Blown in attic insulaton would need to be about 10" thick.
true
Eskimos need thick boots to insulate their feet, as it is very cold where they live.
Specimens need to be thin in order to allow light or electrons to pass through easily for proper visualization. Thinner specimens result in clearer images with better resolution, as the light or electrons can interact more effectively with the specimen.
RAWR
Blood specimens that need to be chilled include those collected for testing electrolytes (such as potassium, sodium), arterial blood gases, ammonia, and lactate. Chilling helps preserve the integrity of these analytes before testing.