Introduction to Medical Protozoology: Entamoeba histolytica & Plasmodium falciparum

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How does Amoeba reproduce asexually?

By sexual conjugation

By gametogony

By endodyogeny

By multiple fission (correct)

What is the life stage of a protozoa that is the active feeding and multiplying stage?

Schizogony

Gametocyte

Trophozoite (correct)

Cyst

How does Toxoplasma multiply internally?

By sexual reproduction

Through gametogony

Through schizogony

By external budding (correct)

Which protozoa undergoes sexual reproduction in one host and asexual reproduction in another host?

Malaria parasite Signup and view all the answers

What is the mode of infection for Cryptosporidium parvum?

Ingestion of the infective stage Signup and view all the answers

How do Balantidium and other protozoa carry out sexual reproduction?

By conjugation Signup and view all the answers

What is the main function of contractile vacuoles in protozoa?

Regulate osmotic pressure Signup and view all the answers

What is the role of the nucleus in protozoa?

Regulation of cell activity and reproduction Signup and view all the answers

How do protozoa mostly achieve movement?

Pseudopodia Signup and view all the answers

What is the primary method of nutrition for protozoa?

Absorption of liquid food Signup and view all the answers

How do protozoa reproduce asexually?

Binary fission Signup and view all the answers

What is the main purpose of excretion in protozoa?

Elimination of waste products Signup and view all the answers

What is the main function of the ectoplasm in protozoa?

Serve as the organ for locomotion and engulfment of food by pseudopodia Signup and view all the answers

Which component is NOT typically found in the endoplasm of protozoa?

Ectoplasm Signup and view all the answers

What is a common feature of most protozoa, according to the text?

They exhibit a wide range of size, shape, and structure Signup and view all the answers

What is a characteristic of parasitic protozoa mentioned in the text?

They can cause severe disease in immunocompromised individuals Signup and view all the answers

What are some biological processes performed by protozoa?

Digestion, excretion, and reproduction Signup and view all the answers

In which part of protozoa is the chromatin typically found?

Endoplasm Signup and view all the answers

How can Giardia lamblia and Entamoeba histolytica be transmitted?

Autoinfection Signup and view all the answers

Which protozoa is responsible for transplacental transmission?

Toxoplasma gondii Signup and view all the answers

What is the classification of Giardia lamblia and Entamoeba histolytica under the subphylum Mastigophora?

Urogenital (Trichomonas) Signup and view all the answers

Which protozoa are parasitic amoebae according to the classification provided?

Entamoeba histolytica Signup and view all the answers

How do protozoa like Giardia lamblia and Entamoeba histolytica multiply?

By both asexual and sexual methods Signup and view all the answers

What is a common method for the prevention and control of protozoal infections mentioned in the text?

Case treatment Signup and view all the answers

What is the most likely causative parasite?

Protozoan Signup and view all the answers

How does the parasite in the scenario multiply?

Binary fission Signup and view all the answers

Which parasitic disease is ranked first in terms of morbidity and mortality?

Malaria Signup and view all the answers

What is the second most common cause of death due to food-borne diseases?

Toxoplasmosis Signup and view all the answers

How many new visceral cases of Leishmaniasis are reported annually?

~30,000 Signup and view all the answers

What was observed in the stool examination of the patient in the case scenario?

Amoeboid trophozoites Signup and view all the answers