The specimen, shown above, was taken from the lungs of a cow…
The specimen, shown above, was taken from the lungs of a cow dying of anthrax. What is the proper name of the pathogen shown in the image, above? [anthrax] a. Bacillus anthracas b. Bacillus anthraces c. Bacillus anthracis d. Bacillus anthrasus What part of this pathogen can be weaponized for bioterrorism use? [bioterrorism] a. cell wall b. cell membrane c. endospore d. flagella
Read DetailsYour patient presents with fatty, foul-smelling diarrhea aft…
Your patient presents with fatty, foul-smelling diarrhea after a camping trip, during which he drank untreated water from a stream. A fecal smear from him is shown, above. What is the proper name of the organism most likely responsible for your patient’s illness? [organism] a. Balantidium coli b. Entamoeba histolytica c. Giardia intestinalis d. Trichonympha In which working group of protozoa does this organism belong? [workinggroup] a. Sarcodina b. Ciliophora c. Mastigophora d. Apicomplexa Euglena is a free-living member of this working group (refer to the question, above). What is the name of the visual organelle that Euglena uses to sense light? [organelle] a. contractile vacuole b. macronucleus c. micronucleus d. stigma
Read DetailsThe specimen, shown above, was taken from a pig carcass. Wha…
The specimen, shown above, was taken from a pig carcass. What is the name of this agent? [agent] a. Tania b. Taenia c. Tannia d. Tinia How do humans generally contract this agent? [transmission] a. aerosol b. fecal-oral c. eating undercooked pork d. vector-borne Would you eat meat that contained the agent shown in the image? [meat] a. No way! b. Yes, uncatagorically! c. Yes, if the meat was well-cooked.
Read DetailsWhat are the four (4) stages of biolfilm formation, in order…
What are the four (4) stages of biolfilm formation, in order? [formation] a. attachment, conditioning, attachment of other organisms, biofilm formation b. conditioning, attachment, biofilm formation, attachment of other organisms c. biofilm formation, conditioning, attachment, attachment of other organisms d. attachment of other organisms, biofilm formation, condition, attachment What is a function of the EPS component of a biofilm? [eps] a. protection from dessication b. antibiotic resistance c. concentrate signaling molecules d. All of the above are correct. e. None of the above is correct. What is the name of the process by which microbes in a biofilm coordinate their actions? [coordination] a. quorem sensing b. quirem sensing c. quorum sensing d. quoorem sensing
Read DetailsWhat is one advantage of heat-fixing a specimen? [advheatfi…
What is one advantage of heat-fixing a specimen? [advheatfix] a. Pathogens are killed. b. Cell motility is preserved. c. Cell size and shape are maintained. d. Flagella are made visible. What can happen if a specimen is overly heat-fixed? [overheatfix] a. Pathogens are preserved, intact. b. Cell size and shape can be distorted. c. Cell motility is preserved. d. Flagella are made visible. The individual cells and the arrangements of the cells on the slide, shown above, are difficult to see, clearly. What mistake in smear preparation would explain this? [smearprep] a. The cells were too old. b. There was too much material applied to the slide. c. Too much stain was applied to the slide. d. The slide was over-decolorized when staining.
Read DetailsIf you dispensed the blue fluid in the 5 mL syringe, above,…
If you dispensed the blue fluid in the 5 mL syringe, above, what volume of fluid would you have dispensed in mL? [syringevolume] a. 5 mL b. 4 mL c. 3 mL d. 4.5 mL What is the volume of a minor gradation of the syringe in mL? [minorgradation] a. 1.0mL b. 5.0mL c. 0.5mL d. 0.1mL
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