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Microbiology
Chapter #1 ?
| Question | Answer |
|---|---|
| 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 |