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Single-celled or simple multicellular eukaryotic organisms that generally do not fit in any other kingdom
Where two individuals join and exchange genetic material stored in a small second nucleus
Saclike organelles that expand to collect excess water and contract to squeeze the water out of the cell
Free-living aquatic organisms that are at the base of most marine and freshwater food chains (most unicellular algae are these)
The cell walls of diatoms which have two parts (like a box and lid) called valves made of silicon dioxide
Plasmodial slime molds
A funguslike protist that has ameboid cells, flagellated cells, and a plasmodial feeding stage in its life cycle
Cellular slime molds
A funguslike protist that lives as an individual haploid amoeboid cell which gathers with other such cells in a pseudoplasmodium when nutrients are scarce
A vast increase in the concentration of diatoms and other photosynthetic protists which can be caused by high water temperatures or nutrient concentrations
The movement toward or away from a chemical stimuluslike movement towards food or away from toxins
A polysccharide used in cosmetics, in various drugs, as a stabilizer in ice cream and salad dressings, in textiles, water-soluble medical dressings, for burns, and in inks, which is found in the cell walls of brown algae
A polysccaride used in scientific research to culture microbes, and also in canned food and bakery items that is found on the cell walls of red algae
A layer of material at the bottom of lakes and oceans formed when diatoms die and their shells accumulate, which is used in detergents, paint removers, toothpaste, and sometimes in in fliters, or as a natural insecticide
A disease caused by apicomplexians caracterized by severe chills, headache, fever, and fatigue
Plasmodium cells that enter a human's bloodstream with a mosquito bite and infect the liver
Merozoites that develop the sexual forms of the parasite which are ingested by a mosquito when it bites an infected person and forms gametes
An illness caused by Giardia lamblia that is characterized by severe diarrhea and intestinal cramps
An illness caused mostly by Cryptosporidium parvum that is characterized by diarrhea and is resistant to chlorine disinfectants due to the protist's outer shell
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