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Microbiology

Chapter #1 ?

QuestionAnswer
Microscope that provides a three dimensional image of specimen Scanning Electron Microscope
Microscope capable of observing living organisms Phase Contrast Microscope
Scientist most responsible for ending the controversy about spontaneous generation Louis Pasteur
Fossils of prokaryotes go back 3.5 to 4 billion years
Which of the following is not a microorganism? Bacterium Algae *Insect (not) Fungus
Descending order of the taxonomic categories Domain-Kingdom-Phylum-Class-Order-Family-Genus-Species
Complex communities of microorganisms on surfaces are called Biofilms
A relationship between organism in which the waste product of one provides nutrients for another is called Commensalism
Sites of the human body does not have a normal flora Blood
Industries that uses microorganisms Chemical-Wine-Cheese
All bacteria are ------------- cells based on presence or or absence of cellular structure Prokaryotic
Cells that contain nucleus Eukaryotic
The taxonomic resource for information on bacteria Bergey's Manuel of system bacteriology
Proteins that are implicated in spongiform encephalopathy Prions
The cleanup of different industrial waste is referred to as Bioremediation
Use visible light Light Microscopes
Most commonly used to observe sectioned and stained tissues, organs, and microorganisms. Bright-Field Microscopes
Used for unfixed, unstained specimens, such as living organisms. Dark-Field Microscopes
Used for the study of living plant and animal cells, microorganisms, and thin tissue slices; they are ideal for cytoplasmic streaming studies Phase-contrast microscopes
Used in conjunction with fluorescent stains/dyes Fluorescence Microscopes
Use a beam of electrons rather than light as the source of energy to visualize specimens. Electron Microscopes
• The microbe must be present in every animal with the disease. • The microbe can be isolated and grown in pure culture. • The cultured microorganism must cause the same disease in an inoculated (previously healthy) animal. • The same microorganism mus Koch’s postulates state
Compare and contrast prokaryotic and eukaryotic cells Prokaryotic cells do not have a nucleus or membrane-bound cell organelles. Eukaryotic cells have a nucleus and membrane-bound cell organelles
• Washing hands with hot, soapy water before food preparation, after using the bathroom, and after changing diapers. • Keeping raw meat, poultry, seafood, and their juices away from prepared, ready-to-eat foods. • Cooking foods thoroughly at high enough Foodborne disease generally can be prevented by
Role of microorganisms in food production Many nonpathogenic microorganisms occur naturally in food, are beneficial, and are used as starter cultures to produce foods such as vinegar, sauerkraut, pickles, fermented milks, yogurt, cheese, and bread
Created by: Alymm91