Podcast Beta
Questions and Answers
How do amoeba acquire food?
Which genera of amoeba are commonly found in the intestinal tract of humans and domestic animals?
What is the most important feature that separates amoeba from other groups of protozoans?
How do amoeba replicate?
Signup and view all the answers
What is the routine lab diagnosis for identifying amoeba?
Signup and view all the answers
What are karyosomes in relation to amoeba?
Signup and view all the answers
What is the major pathogen causing amebic dysentery?
Signup and view all the answers
What is the infective stage of Entamoeba histolytica?
Signup and view all the answers
How do people get infected by Entamoeba histolytica?
Signup and view all the answers
What is the characteristic feature of Entamoeba histolytica's trophozoite?
Signup and view all the answers
In which part of the body does excystation occur after ingesting Entamoeba histolytica cysts?
Signup and view all the answers
What does Entamoeba histolytica require to complete its life cycle?
Signup and view all the answers
What is the stage produced from excystation in the small intestine?
Signup and view all the answers
What may trophozoites do after growing and multiplying in the large intestine?
Signup and view all the answers
What can occur if Entamoeba histolytica perforates the intestinal wall?
Signup and view all the answers
What is a diagnostic specimen for Entamoeba histolytica?
Signup and view all the answers
Study Notes
Amoeba and Food Acquisition
- Amoebas acquire food through a process called phagocytosis, engulfing bacteria, yeasts, and other small organisms.
Amoeba Genera in Intestinal Tract
- Genera of amoebas commonly found in the intestinal tract of humans and domestic animals include Entamoeba and Endolimax.
Key Feature of Amoebas
- The most important feature that separates amoebas from other groups of protozoans is their ability to form pseudopodia.
Amoeba Replication
- Amoebas replicate through a process called binary fission, where the cell divides into two identical daughter cells.
Lab Diagnosis for Amoeba
- The routine lab diagnosis for identifying amoebas involves microscopical examination of stool or biopsy specimens.
Karyosomes
- Karyosomes are clusters of chromatin that condense to form nuclei in amoebas.
Pathogen Causing Amebic Dysentery
- The major pathogen causing amebic dysentery is Entamoeba histolytica.
Infective Stage of Entamoeba histolytica
- The infective stage of Entamoeba histolytica is the cyst.
Transmission of Entamoeba histolytica
- People get infected by Entamoeba histolytica through the fecal-oral route, often by consuming contaminated food or water.
Characteristics of Entamoeba histolytica's Trophozoite
- The characteristic feature of Entamoeba histolytica's trophozoite is its ability to form pseudopodia.
Excystation
- Excystation occurs in the small intestine after ingesting Entamoeba histolytica cysts.
Life Cycle of Entamoeba histolytica
- Entamoeba histolytica requires a human host to complete its life cycle.
Excystation Stage
- The stage produced from excystation in the small intestine is the trophozoite.
Trophozoite Behavior
- Trophozoites may multiply and grow in the large intestine, then penetrate the intestinal wall and enter the bloodstream.
Complications of Entamoeba histolytica Infection
- If Entamoeba histolytica perforates the intestinal wall, it can lead to peritonitis or liver abscesses.
Diagnostic Specimen
- A diagnostic specimen for Entamoeba histolytica is a stool or biopsy sample.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Learn about amoeba, a protozoa belonging to the subphylum Sarcodina, which has no truly defined shape and moves through the use of pseudopodia. Understand its role as a common symbiotic organism in the intestinal tract of humans and domestic animals.
