Study Guides (390,000)
US (220,000)
Rutgers (3,000)
3:26 (50)

01:146:329 Lecture Notes - Lecture 6: Entamoeba, Apicomplexan Life Cycle, CommensalismExam

Cell Biology and Neuroscience
Course Code
Study Guide

This preview shows pages 1-3. to view the full 10 pages of the document.
Lab 6: Amoeba
-Free-living amoebae are abundant and widely spread
-Phylum: Sarcomastigophora
-Subphylum: Sarcodina
-Handful are known to be pathogenic under normal situations within the host
-Many are commensals or mutualists
-Parasitic amoeba are capable of great harm, large because of their ability to hydrolyze host tissue and
many produce proteases along their surface
-Amoebae = third greatest killer among parasitic diseases
-Almost all cases, parasites inhabit the intestine of their host
-Amoebic dysentery = common symptom of infection
-Need to know the species morphology, pathology, treatment, and prevention
-Be able to recognize distinguishing characteristics of each intestinal amoebae
***Be able to differentiate the amoebae and study pathology of amoebic infections***
Responsible for identifying the organisms and the accompanying material:
A. Entamoeba histolytica
B. Entamoeba coli
C. Iodamoeba buetschilii
D. Endolimax nana
E. Entamoeba gingivalis
F. Naegleria fowleri
-Make a table of comparative characteristics for all of the species
-Be able to identify trophozoite and cyst stages, which will aid in species identification
-Note whether or not the species are pathogenic, where they are found, and how they compare to E.

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

A. Entamoeba histolytica
-Infects at least 50 million worldwide and will infect 10% of the human population at one point in
their lives
-Pay attention to the nucleus of this species as compared to the other species in this lab
1. Draw the life cycle of Entamoeba histolytica.
2. Describe the pathology caused in amebic dysentery.
3. Where in the body does Entamoeba histolytica establish, and what is the shape of the ulcer formed?
4. Describe the transmission route for this parasite, and be able to identify the trophozoite and cysts.

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

B. Non-Pathogenic Amoebae
-Entamoeba coli, Iodamoeba buetschlii, Endolimax nana, and Entameba gingivalis are protozoa
associated with humans but do not cause pathology
-Important to identify these organisms to differentiate them from pathogenic species and avoid
unwarranted medical attention
1. Draw the generalized life cycle of the non-pathogenic amoebae.
2. Draw the trophozoites of Entamoeba coli, Iodamoeba butschlii, and Endolimax nana.
3. Draw the cysts of Entamoeba coli, Iodamoeba buetschlii, and Endolimax nana.
You're Reading a Preview

Unlock to view full version