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4T0X1 CDC's URE questions (3 of 3) with 100% verified correct answers

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4T0X1 CDC's URE questions (3 of 3) with 100% verified correct answersWhat are the 2 most common measurements used in microscopy - ✔✔micrometer and nanometer describe simple microscopes and compo ... und microscopes - ✔✔simple microscopes contain a single lens; compound microscopes contain a group of diverse lenses What is refracted light - ✔✔"light whose rays have been bent out of their original course by passing through a transparent membrane" list 3 basic lens shapes - ✔✔flat, convex, and concave what is the "resolving power" of a microscope lens - ✔✔ability to distinguish fine details and structures what is included in the magnification system of a microscope - ✔✔objectives and eye pieces on a microscope, what does the condenser do - ✔✔concentrates, directs, and focuses the path of light onto the object under examination markers (grids, scales, etc.) used for measuring objects are placed on what component of the microscope - ✔✔eyepiece diaphragm what is the purpose of staining objects in bright field microscopy - ✔✔to enhance light absorption and contrast of objects What is the usefulness of darkfield microscopy - ✔✔when examining unstained microorganisms suspended in fluid What would you use phase-contrast microscopy to accomplish - ✔✔detailed examination of internal structures in living cells and microorganisms as they move and change shape what is the principle behind electron microscopy; and what can electron microscopy be used for - ✔✔electron beams; and the study of ultra structures and fine details what is the significance of water as a human body requirement, as described in this volume - ✔✔it is critical, because most chemical activities take place in this medium 3 activities or functions of metabolism - ✔✔nutrition, synthesis and cellular respiration [Show More]

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