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WorksheetsEntamoeba histolytica
Total questions: 12
Worksheet time: 6mins
What is Entamoeba histolytica?
An anaerobic parasite infecting humans and other primates
A chronic immune disease caused by human immunodeficiency virus
A tiny parasite that causes a diarrheal disease called giardiasis
A serious infection that is a foodborn bacterial illness caused by eating contaminated food
What disease is caused by Entamoeba histolytica?
Tularemia
Tetanus
Amebiasis
Cysticercosis
How does Entamoeba histolytica spread?
Ingestion of contaminated food or water
Fecal-oral route
Indirect hand contamination from contaminated surfaces
Oral and sexual content with an asymptomatic or chronically ill carrier
All of the above
What is the morphology of an Entamoeba cyst?
Bacillus; measures to about 8-10µm
Coccus; measures to about 16-18µm
Diplococci; measures to about 10µm
Spherical that measure about 12-15 µm; 4 nuclei
Where does Entamoeba histolytica live in the body?
In the large and small intestine, but can spread to the liver
The nose and throat
brain and spinal cord
Skin and lymph nodes
What are two virulence factors of Entamoeba histolytica?
Outer membrane proteins
Gal/GalNAc lectin
Acid tolerance
proteases
What is the incubation period?
1-2 weeks
24 hours
2-4 weeks
5-7 weeks
What are trophozoites and how does it spread through the body?
Trophozoites are the active, feeding stage of parasites. They spread through the body by invading tissues and through the vein system
What are the symptoms of Amebiasis?
Abdominal cramping
Nausea
Seizures
Anxiety
Which vaccine can help prevent Entamoeba histolytica?
There are currently none to help cure
Which medications can help treat Amebiasis?
Ampicillin
Metronidazole
Tinidazole
Fluoroquinolones
What is the best way to prevent spreading the infection?
Wash your hands thoroughly with soap and water
Clean bathrooms and toilets often
Pay attention to any toilet seat in your own home or in public
All of the above
