science: chpt. 19 test Flashcards
Microscopic protozoan parasite that infects insects and other organisms, causing disease
Microsporidium
Heterotrophic, unicellular, animal-like protist
Protozoan
A membrane layer that encloses a paramecium and some other protist
Pellicle
Elongated, cylindrical structure that can discharge a spinelike structure that may function in defense, as an anchoring device, or to capture prey
Trichocysts
Organelle that collects excess water in the cytoplasm and expels it from the cell; maintains homeostasis in hypotonic environments
Contractile vacuole
Temporary cytoplasmic extensions that sarcodines use for feeding and movement
Pseudopod
Hard, porous, shell-like covering of an amoeba
Test
Able to emit light
Bioluminescent
Group of cells or organisms that join together, forming a close association
Colony
Reproductive life cycle that alternates between a diploid sporophyte generation and a haploid gametophyte
Alternation of generations
Feeding stage of a slime mold in which it is a mobile cytoplasmic mass with many diploid nuclei but no separate cells
Plasmodium
Chemical given off by starving amoeba-like cells that serves as a signal to the cells to form a slug like colony
Acrasin
Plantlike, photosynthetic, unicellular organisms that can become parasitic when there is no light
Algae
Unicellular, animal-like protist; they are heterotrophs that ingest bacteria, algae, or other protozoans
Amoeba
In favorable conditions dinoflagellates reproduce in large numbers called _________. They deplete the oxygen in the water and suffocate fish.madditional fish suffocate when their gills are clogged with dinoflagellates. __________ have a red tint so when they die it lets off red tides that are a danger to humans.
Blooms
It is a primary photosynthetic pigment; has the pigment that gives green color in plants
Chlorophyll
They have yellow and brown carotenoids; unicellular, photosynthetic; have two flagella; reproduce sexually and asexually
Chrysophytes
The outer cell membrane and an inner thickened cytoplasm of an amoeba
Ectoplasm
Unicellular organism with membrane bound nucleus and organelles; formed when a large prokaryote engulfed a smaller prokaryote and eventually evolved into one organism
Eukaryote
Can be a serious threat to humans because they produce a potentially lethal nerve toxin. The toxins affect people when they eat shellfish
Red tides
Lives symbiotically with green algae; unicellular protozoan; reproduces by binary fission
Paramecia
Characteristic of plants yet they lack a cell wall
Chloroplast
List Habitats of Protists
Damp, aquatic environments such as decaying leaves, damp soil, ponds, streams, and oceans
List the Classes of Algae
Diatoms, Dinoflagellates, euglenoids, chrysophytes, brow algae, green algae, red algae
List some Uses for Algae
Red Algae is used for soup and sushi, brown algae is used to stabilize ice cream and syrup, green algae is in sea lettuce and meat, and diatoms are used as a filtering material in beverages and cooking oils
List the Groups of Protists
Animal like, plant like, fungus like
List the Phyla of Protozoans
Ciliates, Amoebas, Sarcodines, Apicomplexa, and Zoomastiginia,
List Protists and Disease in Humans
African Sleeping Disease, American Sleeping Disease, and Malaria
