Chapter 4 Flashcards
Saprobes
organisms that obtain nutrients from dead plants or animals in soil or aquatic habitats
Transitional and condensing vesicles
tiny membrane bound packets of protein that bud off ER and get picked up by golgi
when finished pinched off golgi and carry proteins to other organelles or go outside of the cell
Pinworm (roundworm) Life Cycle: Infection and Transmission
- swallowed (self infection)
- copulatory spicule (in guts)
- emerge from anus
- scratching contaminates hands with fertile egg
- re-infects host or cross infects a new host
Intermediate (secondary) host
Transport host
definitive (final) host
- larval development occurs
- intermediate host with no parasitic development
- adulthood and mating occurs
enterbiasis
an infection from the helminth pinworm
Enterobius vermicularis
causative agent for pin worm infection
dimorphic
fungi that can exist in a yeast or hyphae form
septa and nonsptate
hyphae divided into segments by cross walls
long, continuous cell NOT divided into individual compartments by cross walls
Trophozoite
vegetative, free living form of a protozoal cell
Twp subtypes of asexual fungal spores
sporangiospores-cleavage in sac like head
conidia- free spores
vegetative hyphae (mycelia)
responsible for visible growth of fungus
give rise to structures that produce fungal spores
penetrates substrate to absorb nutrients
Protozoan Cyst
a resistant dormant stage
Cestodes
Trematodes
Nematodes
one of the two subdivisions of flat worms (tapeworms) ribbon like arrangement
the other subdivision of flat worms (flukes) flat ovoid bodies
roundworms and flatworms
Two forms of microspcopic fungi
yeasts and hyphae
Eukaryotic Flagellum
structurally more complex than bacterial flagella
covered by an extension of the cell membrane
Mycoses
are referred to as “fungal infections”
Cisternae (singular, cistern) Function
transport materials from the nucleus to the cytoplasm and ultimately to the cell’s exterior
Cooperation of organelles in protein synthesis and transport (order)
nucleus–RER–Golgi–vesicles–secretion
Psuedohyphae
chain of yeast cells formed when buds remain attached in a row
Candida albicans
effects mucous membranes, skin and nails can also be caused a yeast infection
Infections from fungi are more common for people with what types of illnesses?
AIDS, cancer, diabetes
Why shouldn’t women change a litter box while pregnant?
a parasitic protozoan Toxoplasma gondii found in cat feces which does not become infectious until 1-5 days after defecation. Which can infect fetus causing birth defects
The Protozoan Ciliophora causes
Balantidiosis
The protozoan Mastigophora causes
Giardiasis
