parasitology

Giardia lamblia

Unicellular parasite of

human digestive tract

how many nuclei does giardia lamblia have?

2 (Binucleate)

what is the shape of Giardia lamblia?

flattened

what does giardia lack?

A mitochondria

do Giardia have sex?

no

How many life cycles does Giardia have?

Two

What are the two stages of Giardia’s life?

trophozoite and cyst

A population of animals that naturally harbor an infectious pathogen, often without getting sick themselves, and serve as a source of infection for other animals or humans.

Animal reservoirs

when poopy water gets in your mouth and now you have a parasite

Fecal oral transmission

A mode of existence in which one organism, the parasite, lives in or on another, the host, obtaining from it part or all of its nutrition and needs of existence, and imposing a net detrimental effect on the host.

Parasitism

true or false? Is a cow eating grass a form of parasitism?

False, because the cow is not deriving its nutrition at the expense of the grass.

A parasite that has evolved to be a parasite, and has no other way to exist is…

An obligatory parasite.

A parasite that isn’t necessarily evolved to be a parasite, but can behave as a parasite in the proper conditions is…

A facultative parasite.

A brain-eating amoeba that doesn’t normally eat people’s brains but just chills in lakes mostly, finds its way into your bloodstream when you go swimming. it tries to get out, and finds its way to your brain and starts chowing down. this parasite is an example of a…

facultative parasite.

A tapeworm is born with the sole purpose of being a parasite. It can not survive without another organism. this is an example of a…

obligate parasite.

Outside the host, it lives on the external surface of the host, often feeding on its blood or skin.

ectoparasite

endoparasite 

inside the host absorbing nutrients or feeding on tissue.

What are the two types of Kinetoplastida?

Leishmania and Trypanosoma

What is the most notable feature of kinetoplastida?

A single elongated

mitochondrion with a kinetoplast near where the

flagellum is anchored into the cell.