Intermediate Host in Parasitic Life Cycles

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What is the definition of a parasite as per the text?

An organism that lives in mutual benefit with its host

An organism that benefits from the host without causing harm

An organism that simultaneously injures the host and derives sustenance from it (correct)

An organism that provides nutrition and shelter to its host

What characterizes parasites living on external surfaces of hosts as mentioned in the text?

They live at the expense of their hosts metabolically (correct)

They may cause acute clinical diseases only

They infect gastrointestinal tracts or circulatory systems

They benefit from the host without causing harm

What distinguishes commensals from parasites?

Parasites benefit from hosts without causing harm (correct)

Commensals live in mutual benefit with hosts

Commensals derive sustenance from their hosts

Commensals injure their hosts

What kind of infections may be asymptomatic according to the text?

Many infections may be asymptomatic Signup and view all the answers

What is the role of an Intermediate Host (IH) in the life cycle of parasites?

Completes the life cycle of some parasites Signup and view all the answers

Which type of host serves as a definitive host for parasites?

Natural host Signup and view all the answers

What is the role of Reservoir Hosts in the context of parasites?

Serves as an important source of infection to other hosts Signup and view all the answers

Which of the following is NOT an example of a Reservoir Host for parasites?

Tsetse fly Signup and view all the answers

How do Biological haematophagous arthropodes help in spreading parasitic infections?

By mechanically transporting parasitic organisms Signup and view all the answers

Which characteristic is NOT associated with Accidental Hosts?

They are natural carriers of certain parasites Signup and view all the answers

What is the diagnostic stage for Entamoeba histolytica?

Mature cyst with 4 nuclei Signup and view all the answers

Which protozoa is responsible for causing amoebic liver abscess?

Entamoeba histolytica Signup and view all the answers

How does Entamoeba histolytica move within the host?

Via bloodstream Signup and view all the answers

Which of the following symptoms would be associated with chronic amoebic dysentery?

Constipation and flatulence Signup and view all the answers

How long can Entamoeba histolytica cysts survive in water?

Up to 1 month Signup and view all the answers

What is a major factor contributing to the persistence of parasitic infections despite advances in treatment and control?

All of the above Signup and view all the answers

What is the main method of motility for Entamoeba histolytica trophozoites?

Pseudopodia Signup and view all the answers

Which parasite causes malaria and is responsible for around 1.12 million deaths per year?

Plasmodium Signup and view all the answers

In which regions do the majority of parasitic infections occur according to the text?

Tropical regions with poverty and poor sanitation Signup and view all the answers

Which disease is caused by Trypanosoma cruzi and affects approximately 13 million people?

Chagas disease Signup and view all the answers

What is a common consequence of filariasis caused by Filariae according to the text?

Disfigurement or incapacitation Signup and view all the answers

Which statement best describes the impact of parasitic infections on communities?

"Mass intervention strategies" and community education are essential for prevention and control. Signup and view all the answers

What is the main symptom of amoebic hepatitis?

Pain in the right hypochondrium referred to the right shoulder Signup and view all the answers

How is hepatic amoebiasis diagnosed in the laboratory?

Stool examination for cysts and trophozoites Signup and view all the answers

What is a key difference between bacillary and amoebic dysentery?

Type of bacteria causing the infection Signup and view all the answers

How is an amoebic liver abscess differentiated from amoebic hepatitis?

Pain that increases with cough or deep breathing in liver abscess Signup and view all the answers

Which test is commonly used for the diagnosis of hepatic amoebiasis?

Liver scan after injecting a radioactive tracer Signup and view all the answers

What is a recommended part of health education to prevent Amoebiasis?

Promoting personal hygiene Signup and view all the answers