Parasitology exam 3

what are some characteristics of Protozoa

one-celled organism with no cell wall

Classified into 4 major groups based on mobility and the structures used to generate movement

What are the 4 major groups based on mobility and the structures used to generate movement

Flagellates

Ciliates

Amoebas

Sporozoans/Apicomplexans

What is a flagellate

a long whip-like or lash like appendage called the flagellum

What is motile trophozoite(flagellate)

Pair-shaped and posses at least one flagellum that allows them to move about in liquid

What is resistant cyst form(flagellate)

Allows them to survive in adverse conditions in the external environment

Where does a flagellate swim and how does it reproduce

swims in hosts bodily fluids

binary fission

What is binary fission

asexual reproduction, divides into 2 identical individuals (clones)

What are examples of flagellates

Giardia

Tritrichomonas

What is ciliates

covered with tiny short hairs over most of there body=cilia

what is Motile Trophozoites (ciliates)

Ciliates dart and twirl speedily in liquid media

What is resistant cyst form (Ciliates)

Allows them to survive adverse conditions in external environment

How does ciliates reproduce and what 2 types of nuclei do they posses

Binary fission

Macronucleus, Micronucleus

What are examples of ciliates

Balantidium

Ichthyophthirius

What do amoebas move with

Pseudopodia-”false feet”

what is Motile Trophozoite(Amoeba)

Glide along a solid surface usually the bottom of a liquid medium

What is a resistant cyst form (Amoeba)

Allows them to survive in adverse conditions in the external environment

How to explain the look of amoebas and how do they reproduce

Amorphous

Binary fission

What does amorphous mean

Poorly defined or blob like in shape

examples of Amoeba

Entamoeba(coli and histolytica)

What is the most complicated and most diverse protozoan

Sporozoans

How do sporozoans move

undulations

What do sporozoans have internal___

internal locomotory organelles- move via Undulations

How do sporozoans reproduce

asexual and sexual reproduction

Sporozoans basic cell types

Sporulated oocyt or sporocyst

Sporozoites

Merozoites

Gametes

Zygotes

example of spoorozoans

Eimeria

Cystoisospora

Isospora

Cryptosporidium

Toxoplasma

Neospora

Sarcocystis

Sporozoans/Apicomplexans phases of life cycle

phase 1-Sporogony

Phase 2-Merogony

Phase 3-Gametogony