Download Exam 1 | BIOL - Medical Microbiology and more Quizzes Medical Microbiology in PDF only on Docsity!
microorganisms
aka-microbesminute, living things that individually are too small to be seen with the unaided eye TERM 2
expectation of the
course
DEFINITION 2 "microbiological" attitudeconceptshistorylaboratory understandingknowledge from a medical perspective of microbiological processes TERM 3
5 organisms that qualify as
microorganisms
DEFINITION 3
- bacteria2. fungi3. algae4. protozoa5. viruses TERM 4
bacteria
DEFINITION 4 relatively simple, unicellular organismsstructure: prokaryotic, unicellularsize: 0.5 micrometers, bacillus, coccus, spiralnutrition: organic chemicals, photosynthesis, inorganic substancesreproduction: binary fission-production of 2 daughter cellslocation: soil, water, dairy, intestinal tract, respiratory tract TERM 5
fungi
DEFINITION 5 organisms whose cells have a distinct nucleus containing the cell's genetic material (DNA), surrounded by a special envelope called nuclear membranestructure: eukaryotic, multicellular, unicellularappearance: molds, mushroomsnutrition: absorbing organic material from environmentreproduction: asexually, sexuallylocation: soil, sea water, animal or plant hosts
protozoa
unicellular, eukaryotic microbesstructure: unicellular, eukaryoticappearance: variety of shapes with long flagella or cillia; 10 micrometersnutrition: absorbs or ingests organic compounds from environment; bacteriareproduction: asexually, sexuallylocation: water, soil TERM 7
algae
DEFINITION 7 photosynthetic eukaryotesstructure: unicellular eukaryoticappearance: relatively large, 100 micrometers, filamentous (chains of cells)nutrition: photosynthesis, requires light and air for growthreproduction: asexually, sexuallylocation: ocean, fresh and salt water, in association with plants TERM 8
virus
DEFINITION 8 very different from other microbial groupsappearance: very small, contains only one type of nucleic acid, either DNA or RNAnutrition: host cellreproduction: uses cellular machinery of hostlocation: host cell TERM 9
vibrio
DEFINITION 9 curved or comma-shaped bacteriumwritten as genus Vibrio, a gram-negative, motile, facultatively anaerobic curved rod TERM 10
bacillus
DEFINITION 10 any rod-shaped bacteriumwritten as genus Bacillus and refers to rod-shaped, endospore-forming, facultatively anaerobic, gram-positive bacteria
regulations continued
- remove all wax/pen marks from glassware with xylene or other solvent8. aseptic technique is paramount; no eating, drinking, liking, chewing, smoking, etc.9. children are not permitted10. report all accidents11. microscope lens should be wiped down with low power objective lens TERM 17
total magnification
DEFINITION 17 objective power x optic powerexample: 4 x 10 = 40 total magnification TERM 18
working distance
DEFINITION 18 space between objective lens and specimen when the latter is in focushigher the mag, the shorter the working distance and greater amount of light required to see the specimen TERM 19
resolving
power
DEFINITION 19 ability of a lens or microscope to distinguish between two closely adjacent pointsaka resolution TERM 20
refractive index
DEFINITION 20 measure of the light-bending ability of a medium
ocular lens
aka eyepiecere-magnifies image formed by the objective lens TERM 22
body tube
DEFINITION 22 transmits image from objective to ocular lens TERM 23
arm
DEFINITION 23 main part of scope where you carry it TERM 24
objective lenses
DEFINITION 24 primary lenses that magnify the specimen TERM 25
stage
DEFINITION 25 holds microscope slide in position
light microscopy
refers to use of any kind of microscope that uses visible light to observe specimen TERM 32
Golden Age of Microbiology
DEFINITION 32 1857- TERM 33
How did the idea of spontaneous generation
come about?
DEFINITION 33 People came to believe that living organisms arise from nonliving matter because they would see flies coming out of manure and maggots coming out of dead animals, and they also saw microorganisms appear in liquids after a day or two.
