Your 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
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