Chapter 5 --Protozoa Flashcards
Misc
eukaryotic cell, mostly harmless, moist habitat, animal parasite or insect vectors, engulf microbes
Chemoheterotophic
lack choloplasts
Classification
difficult b/c of diversity, simple grouping is based on motility, reproduction and life cycle
Mastigophora
primarily flagellar motility, sexual reproduction – ex. giardia intestinalis
Sarcodina
primarily amoeba, asexual by fission, move by pseudopods
Ciliophora
cilia, cysts & trophozoites – uses cilia to agitate water to bring food in
Apicomplexa
motility is absent except male gametes; sexual & asexual reproduction – all are parasitic
Cyst
protected structure; contains larval stage
Vegetative form
active; normal processing – growing and looking for food : trophozoite (of note: zoite means active)
Definitive Host
final host; harbors the adult
Intermediate Host
secondary host; harbors a larval or intermediate form of parasite - there can be 2-3 intermediate hosts
Infective form
form in which organism makes you sick, can be many forms – egg, larva, cyst
Diagnostic form
when is becomes present and can be tested, migrates out of body
Mechanical vector
passive – ex. fly, “shit sticks to legs and drops onto food”
Biological vector
active; “requires action – mosquito, has to spend time to drink blood”
