Chapter 5 Kingdom Protista Flashcards
Protozoa reproduce sexually by fusion of gametes.
Conjugation
Life cycle alternates between?
Cyst form
Trophozoite form
General characteristics of Protozoa
Belong to the Kingdom Protista
Protozoa are unicellular
Eukaryotic microorganisms
Lack a cell wall
Relatively few cause disease
Most inhabit soil and water
Vary in motility
Feed by absorption or phagocytosis
Phylum/division Sarcodina:
Amoebas
Pseudopodia
Phylum/division: ciliates
Cilia
Phylum/division mastigophora: flagellates
Flagella
Phylum/division sporozoa:
Sporozoa
Non-motile
The actively growing form of a protozoan
Trophozoite
Hardened stage of protozoan
Cyst
Entamoeba histolytica
*Amoebic dysentery
*Fecal-oral route
Ingested my food/water contaminated with human feces
How do Protozoa reproduce?
Fission
Budding
Naegleria fowleri
Disease from nasal entrance hot tubs, rivers, and ponds
Acute meningoencephalitis
Effects meniges around spinal cord
Inflammation of the brain
Balantidiasis coli
Diarrhea type infection
Only human parasite of ciliates
Fecal-oral route
It invaded the large intestine
Trichomonas vaginalis
Genitourinary trichomoniasis
Transmitted venereal contact
Female have green/yellow discharge
Giardiasis (Backpacker Fever)
A gastroenteritis type of disease
(Smelly farts)
Intestinal disease
Most common cause of epidemic waterborne diarrheal disease
Fecal-oral route
Trypanosome brucei gambiense
African sleeping sickness/African trypanosomiasis
Transmitted to humans by the bite of an infected tsetse fly
Wild animals are major hosts
Trypanosoma brucei cruzi
South American sleeping/Chagas disease
Transmitted to humans by the bite of an infected arthropod vector the reduviid bug
Reduviid bugs bite humans at night and defecate when they feed
(Parasite from bug)
Sleeping sickness symptoms
Involves the lymphatic and nervous system of humans
Chronic bouts of fever and headaches
Paralysis and a general wasting away
Leishmaniasis
Transmitted by sandfliea
Enters bloodstream
May cause oriental sore
Non-fatal
Body develops immunity after initial infection
Four Plasmodium species cause malaria
P. Falciparum
P. Malariae
P. Ovale
P. Vivax
The vector transmitted disease from
- human to human
- animal to human
- affected my female Anopheles mosquito
