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Microbiology 205 Exam 1 With Complete Solutions
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Microbiology 205 Exam 1 With Complete Solutions
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Microbiology 205 Exam 1 With CompleteSolutions
Microorganism Categories Answer: small animals, protozoa, fungi, algae, and prokaryotes
Fungi Answer: eukaryotic (membrane bound nucleus), obtains food from other organisms,
possesses cell wall
Protozoa Answer: single-celled eukaryotes, similar to animals in cell structure and nutrients needed,
live in water
Algae Answer: unicellular or multicellular, photosynthetic, simple reproductive system
Prokaryotes Answer: unicellular and lack nuclei, smaller than eukaryotes, found where there is
moisture and extreme conditions, and reproduce asexually
Viruses Answer: non-cellular structures composed of one or more pieces of DNA or RNA and are
miniscule
Spallanzani's Experiment Answer: Italian scientist, boiled meat or vegetable infusions in glass flasks
that were sealed by melting the necks. Responsible for ruling out spontaneous generation
living organisms Answer: What causes fermentation?
Louis Pasteur Answer: developed the germ theory of disease
, Robert Koch Answer: studied causative agents of disease. Said that the agent was isolated and
grown outside the host. Developed simple staining techniques, use of steam to sterilize, use of petri
dishes, and aseptic techniques
simple microscope Answer: What was developed earliest in the history of the field Microbiology?
Microscopy General Principles Answer: wavelength of radiation, refraction and magnification,
resolution and contrast
Electromagnetic Spectrum Answer: wavelength scale that shoes the relationship between various
forms of radiation.
greater resolving power Answer: What do the short wavelengths mean on an electromagentic
spectrum
Refraction Answer: bending of light (radiation)
Magnification Answer: perceived enlargement of primary images
Resolution Answer: capability of distinguishing between two separate but adjacent objects
Contrast Answer: difference in intensity between two objects, or between an object and its
background
Types of Light Microscopes Answer: bright-field, dark-field, phase, fluorescent, and confocal
Bright-Field Microscope Answer: contains a single lens
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