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The Protists
Chapter 7: The Protists
| Question | Answer |
|---|---|
| Algae | an organisms in the kingdom Protista that performs photosynthesis |
| Amoeba | a protozoan that undergoes a crawling movement by forming cytoplasmic projections into the environment. |
| Apicomplexan | a protozoan containing a number of organelles at one end of the cell that are used for host penetration |
| Autotroph | referring to an organism that uses carbon dioxide as a carbon source |
| Bioluminescent | the emission of light by a living organism in which the light is produced by an enzyme-catalyzed chemical reaction during which chemical energy is converted to light energy |
| Cellular slime mold | a member of the protists that exists as amoeboid cells, which aggregate into a multicellular “slug” |
| Ciliate | A protozoan that moves with the aid of cilia |
| Cilia | Hair-like projections on some eukaryotic cells |
| Conjugation | in the protozoan ciliates, a sexual process involving the reciprocal transfer of micronuclei between cells in contact |
| Contractile vacuole | a membrane-enclosed structure within a cell’s cytoplasm that regulates the water content by absorbing water and then contracting to expel it |
| Cyst | a dormant and very resistant form of a protozoan and multicellular parasite |
| Definitive host | an organism that harbors the adult, sexually mature form of a parasite |
| Diatomaceous earth | filtering material composed of the remains of diatoms |
| Diatom | one of a group of microscopic marine algae that preforms photosynthesis |
| Dinoflagellate | a microscopic photosynthetic marine alga that forms one of the foundations of the food chain in the ocean |
| Endosymbiosis | symbiosis in which one of the symbiotic organisms lives inside the other |
| Flagella | a long hair-like appendage composed of protein and responsible for motion in microscopic organisms |
| Foraminiferan | a shell-containing amoeboid protozoan having a chalky skeleton with window-like openings between sections of the shell |
| Fruiting body | the general name for a reproductive structure of a fungus from which spores are produced |
| Green algae | a member of the Protists that carries out photosynthesis ans may have given rise to green plants |
| Intermediate host | a host in which the larval or asexual stage of a parasite is found |
| Macronucleus | the larger of two nuclei in most ciliates |
| Micronucleus | the smaller of two nuclei in most ciliates |
| Mixotroph | an organism that can exist as either an autotroph or a heterotroph |
| Organelle | a specialized compartment in eukaryotic cells that has a particular function |
| Pellicle | a flexible covering layer typical of the protozoan ciliates |
| Phytoplankton | microscopic free-floating communities of cyanobacteria and unicellular algae |
| Plasmodium | the acellular mass of protoplasm consisting of thousands of nuclei typical of the acellular slime mold |
| Protozoan | a single-celled eukaryotic organism that lacks a cell wall and usually exhibits chemoheterotrophic metabolism |
| Pseudopodium | a projection of the plasma membrane that allows movement in the members of the amoebozoans |
| Radiolarian | a single-celled marine organism with a round silica-containg shell that has radiating arms to catch prey |
| Red tide | a brownish-red discoloration in seawater caused by increased numbers of dinoflagellates |
| Slime mold | an amoeboid protest that can, under certain conditions, transform into a multicellular slug and migrate to better growth conditions |
| Symbiosis | an interrelationship between two populations of organisms where there is a close and permanent association |
| Trichocyst | a structure of some ciliate and flagellate protozoans that consists of a cavity that contains long, thin threads that are ejected in response to the correct stimuli |
| Trophozoite | the feeding form of a microorganism, such as a protozoan |
| Unicellular alga | a member of the protists that exists as a single cell and carries out photosynthesis |
| Water mold | a member of the protists that superficially resembles a fungal mold but is now recognized as having an independent evolutionary history |
| Zooplankton | small crustaceans and other animals that inhabit the water column of oceans, seas, and bodies of fresh water |
| Zoospore | an asexual spore that uses a flagellum for locomotion |
Created by:
drmicro
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