MCQ on Amoebiasis with Answers

  • Amebiasis is an intestinal disease caused by protozoa and is observed only in humans.
  • The source of infection is a sick or carrier of amoebas. A person becomes infected by drinking contaminated water, food poisoning, or by household contact (through dirty hands). 
  • Amoeba cysts that are at rest enter the intestine, where they are converted into a translucent form of the pathogen. 
  • This form either lives permanently in the intestine, forming the carriage of amoebiasis or penetrates the intestinal wall and turns into a tissue form.
  • Amoebiasis is caused by the single-celled organism Entamoeba histolytica. It has 2 stages of development – vegetative and cyst (resting phase). The microorganism is excreted in the feces of the patient or carrier and enters the environment.
  • Causes of amoebiasis include unsatisfactory living conditions; hygienic illiteracy, weakening of the immune system, and improper nutrition.
  • Symptoms of amoebiasis usually occur 1 to 1.5 months after infection. Like elevated body temperature, irritability, fatigue, sleep disorders, loss of appetite, and headaches.
  • The most effective medicines for the destruction of pathogens are metronidazole and tinidazole.

MCQ on Amoebiasis with Answers Pdf

Q1. What is amebiasis? 
A) A type of fungus infection 
B) A type of bacterial infection 
C) A type of viral infection 
D) A type of parasitic infection
Answer: D) A type of parasitic infection
Amebiasis is an infection caused by the parasite Entamoeba histolytica, making it a parasitic infection.

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Q2. Amoebic dysentery is caused by _
A) Viruses
B) Bacteria
C) Helminth
D) Protozoa
Answer: D) Protozoa
Amoebic dysentery is specifically caused by the protozoan parasite Entamoeba histolytica.

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Q3. What is the causative agent of amebiasis? 
A) Candida albicans 
B) Escherichia coli 
C) Hepatitis B virus 
D) Entamoeba histolytica
Answer: D) Entamoeba histolytica
The protozoan Entamoeba histolytica is the organism responsible for causing amebiasis.

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Q4. Entamoeba histolytica can be cultured in
A) Diamond’s medium
B) CLED medium
C) NNN medium
D) MacConkey agar
Answer: A) Diamond’s medium
Diamond’s medium is a specialized culture medium used to grow Entamoeba histolytica in the laboratory.

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Q5. How is amebiasis transmitted? 
A) Through respiratory secretions 
B) Through contact with contaminated objects 
C) Through the fecal-oral route 
D) Through sexual contact
Answer: C) Through the fecal-oral route
Amebiasis is typically transmitted through ingestion of food or water contaminated with fecal matter containing Entamoeba histolytica cysts.

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Q6. Which of the following are symptoms of amebiasis? 
A) Fever, chills, and coughing 
B) Diarrhea, abdominal pain, and blood in the stool 
C) Rash, fatigue, and muscle aches 
D) All of the above
Answer: B) Diarrhea, abdominal pain, and blood in the stool
Common symptoms of amebiasis include diarrhea, abdominal pain, and dysentery, which is characterized by blood in the stool.

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Q7. Which of the following groups of people are at higher risk of contracting amebiasis? 
A) Children under the age of 5 
B) Healthcare workers 
C) People who travel to areas with poor hygiene and sanitation 
D) All of the above
Answer: D) All of the above
Children, healthcare workers, and people traveling to areas with poor sanitation and hygiene are all at higher risk of contracting amebiasis.

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Q8. Can amebiasis be transmitted from person to person? 
A) Yes, through contact with contaminated objects 
B) Yes, through sexual contact 
C) Yes, through respiratory secretions 
D) Yes, through the fecal-oral route
Answer: D) Yes, through the fecal-oral route
Person-to-person transmission of amebiasis occurs through the fecal-oral route, primarily via contaminated food and water.

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Q9. What are the symptoms of amebiasis?
A) loose feces (poop), 
B) loss of appetite
C) stomach cramping
D) All of these
Answer: D) All of these
Symptoms of amebiasis include loose feces (diarrhea), loss of appetite, and stomach cramping, among others.

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Q10. Which of the following medications are commonly used to treat amebiasis? 
A) Penicillin and amoxicillin 
B) Acyclovir and valacyclovir 
C) Fluconazole and itraconazole 
D) Metronidazole and tinidazole
Answer: D) Metronidazole and tinidazole
Metronidazole and tinidazole are antiparasitic medications commonly used to treat amebiasis.

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Q11. The most common site for amoebiasis is:
A) Cecum
B) Sigmoid colon
C) Transverse colon
4) Hepatic flexure
Answer: A) Cecum
The cecum is the most common site for infection by Entamoeba histolytica in the intestines.

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Q12. Which of the following statement is  incorrect about amoebiasis________
A) Causes dysentery
B) Parasite of the small intestine
C) Houseflies are mechanical carriers
D) Symptoms include constipation, abdominal pain, and cramp.
Answer: B) Parasite of the small intestine
Entamoeba histolytica primarily infects the large intestine, not the small intestine. Other statements are correct about amoebiasis causing dysentery, houseflies being mechanical carriers, and symptoms including constipation, abdominal pain, and cramps.

Q13. Which organ is affected by Amoebiasis?
A) Amebiasis is an infection of the intestines
B) Amebiasis is an infection of the Brain
C) Amebiasis is an infection of the Liver
D) Amebiasis is an infection of the Glands
Answer: A) Amebiasis is an infection of the intestines
Amebiasis primarily affects the intestines, particularly the large intestine.

Q14. Which of the following statements about intestinal amoebiasis is false
A) The life cycle of Entamoeba histolytica has two phases: trophozoite and cyst
B) The main source of infection is people who continuously discharge cysts in feces
C) Oral infection is the main route of transmission
D) Trophozoites are infectious forms of Entamoeba histolytica
Answer: D) Trophozoites are infectious forms of Entamoeba histolytica
The cyst form, not the trophozoite, is the infectious stage of Entamoeba histolytica. Trophozoites are the active, motile form that cause disease symptoms but do not survive long outside the host.

Q15. The most common site for amoebiasis is_______
A) colon  
B) sigmoid colon
C) rectum
D) All of these
Answer: D) All of these
Amebiasis can affect the colon, sigmoid colon, and rectum, making all these sites common for the infection.

Q16. Indicate the drug that is not effective in amoebiasis______
A) Paracetamol
B) Metronidazole 
C) tinidazole
D) None of these
Answer: A) Paracetamol
Paracetamol (acetaminophen) is a pain reliever and fever reducer, not an antiparasitic medication. Metronidazole and tinidazole are effective treatments for amebiasis.

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