AEM 341 Exam 1 WITH ANSWERS

AEM 341 Exam 1 WITH ANSWERS
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Microbiology - CORRECT ANSWERS ✔✔Science of microorganisms
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Microorganism - CORRECT ANSWERS ✔✔cellular and acellular
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biological entities too small to be seen with the naked eye
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cellular microorganisms - CORRECT ANSWERS ✔✔fungi, protists,
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bacteria, archea |\




acellular microorganisms - CORRECT ANSWERS ✔✔viruses,
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viroids, satellites, prions
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Domain system - CORRECT ANSWERS ✔✔Bacteria, Archaea,
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Eukarya


Edward Jenner - CORRECT ANSWERS ✔✔Developed a vaccine for
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smallpox in 1796 |\ |\




Antony van Leeuwenhoek - CORRECT ANSWERS ✔✔first to
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observe and accurately describe mircoorganisms
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Spontaneous generation - CORRECT ANSWERS ✔✔living
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organisms arise from nonliving material
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,Pure Culture - CORRECT ANSWERS ✔✔Group of bacteria cells that
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originated from "mom" cell, representing 1 gene name and 1
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species


Francesco Redi - CORRECT ANSWERS ✔✔discredited spontaneous
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generation
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Louis Pasteur - CORRECT ANSWERS ✔✔provided evidence needed
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to discredit spontaneous generation
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John Tyndall - CORRECT ANSWERS ✔✔-provided evidence for the
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existence of exceptionally heat resistant bacteria
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-dust carries microorganisms
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Ferdinand Cohn - CORRECT ANSWERS ✔✔heat-resistant bacteria
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can produce endospores
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Robert Koch - CORRECT ANSWERS ✔✔-established relationship
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between bacillus anthracis and anthrax.
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-koch postulate |\




Koch Postulate - CORRECT ANSWERS ✔✔used to establish the link
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between a particular microorganism and a particular disease
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Fannie Hesse - CORRECT ANSWERS ✔✔created idea for original
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agar material |\

, Light microscopes - CORRECT ANSWERS ✔✔-bright field
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-dark field |\




-phase-contrast
-fluorescence
-confocal scanning laser microscopy
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Electron Microscopy - CORRECT ANSWERS ✔✔-transmission
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electron microscope |\




-scanning electron microscope |\ |\




Microscope Resolution - CORRECT ANSWERS ✔✔-ability of a lens
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to separate or distinguish small objects that are close together
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-shorter wavelength = greater resolution
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Bright-field microscope - CORRECT ANSWERS ✔✔-produces dark
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image against a brighter background
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-has several objective lenses. Parfocal
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-total magnification
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Parfocal lens - CORRECT ANSWERS ✔✔changing the objective
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lens without losing focus of a specimen
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Darkfield Microscope - CORRECT ANSWERS ✔✔-produces bright
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image against dark background
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