Courses for Kids
Free study material
Offline Centres
Questions & Answers
Last updated date: 02nd Dec 2023
Total views: 280.2k
Views today: 6.80k
MVSAT Dec 2023

The active form of Entamoeba histolytica feed upon.

280.2k+ views
Hint: Entamoeba histolytica is an anaerobic parasitic amoebozoa in the Entamoeba family. E. histolytica, which mostly infects humans and other primates and causes amoebiasis, is estimated to infect 35-50 million people worldwide.

Complete answer:
Entamoeba histolytica is a protozoan parasite that causes the disease amoebiasis. It is most commonly found in the large intestine and induces internal inflammation. Entamoeba histolytica's life cycle does not require an intermediate host. Mature cysts (spherical, 1215 m in diameter) are passed in an infected human's faeces.
Another person may become infected by ingesting fecally contaminated water, food, or hands. If the cysts make it through the acidic stomach, they will revert to trophozoites in the small intestine. Trophozoites migrate to the large intestine, where they survive and reproduce by binary fission.
Cysts and trophozoites can both be found in the faeces. Cysts are typically found in firm stool, while trophozoites are typically found in loose stool. Only cysts can survive for longer periods of time (up to several weeks outside the host) and infect other people. When trophozoites are consumed, they are destroyed by the stomach's gastric acid. Trophozoites may be transmitted during sexual contact on rare occasions.
The lysis of epithelial cells causes damage, which is caused in part by the incorporation of pore-forming proteins into the cell's membrane. Neutrophils and non-activated macrophages can also be destroyed and swallowed by the organism, restricting the immune system's ability to combat disease. E. histolytica can also phagocytose red blood cells.
They feed on erythrocytes, colon mucosa, and submucosa.

The symptoms, which may include loose faeces (poop), stomach pain, and stomach cramping, are mostly very mild. Amebic dysentery is a serious type of amebiasis that is characterised by stomach pain, bloody stools (poop), and fever.