Protista example organisms
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Protista Example Organisms
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Giardia intestinalis
Supergroup: Excavata It is a Diplomonad Lives in the intestines of mammals Infects people when they drink water
contaminated with feces that has the cysts of the protist.
Causes severe diarrhea The way to kill the this parasite is by
boiling it.
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Trichomonas vaginalis
Supergroup: Excavata It is a Parabasalid It is a sexually transmitted parasite that
infects about 5 million people each year. It travels along the reproductive and
urinary tracts by moving its flagellum along the mucous- coated linings.
Is known to infect the vagina in females, but can also infect the urinary tract in males.
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Euglena viridis
Supergroup: Excavata It is a Euglenozoan Has an eyespot which it uses to “look”
for its food Uses flagella to move around
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Karenia brevis
Supergroup: Chromalveolata It is a Dinoflagellate Inhabits the Gulf of Mexico Releases toxins that kill invertebrates
and fishes. People who eat mollusks with the
toxins released by this protist can potentially die in serious cases.
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Plasmodium falciparum
Supergroup: Chromalveolata It is an Apicomplexan It is a parasite that causes Malaria in
humans Almost all deaths due to malaria are
cases of this specific protist.
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Paramecium caudatum
Supergroup: Chromalveolata It is a Ciliate They contain many cilia that help them
to move around and capture their prey They live in fresh water They have 2 nuclei It is sometimes referred to as a “slipper” because of its shape.
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Tabellaria fenestrata
Supergroup: Chromalveolata It is a Diatom They are photosynthetic They are found in marine
environments, sometimes attached to marine life.
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Prymnesium parvum
Supergroup: Chromalveolata It is a Golden algae It is flagellated, which aids in its
mobility. It produces a toxin that kills fish.
However, it poses no known threat to humans.
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Macrocystis pyrifera
Supergroup: Chromalveolata It is a Brown algae It is commonly known as “Giant Kelp” It is found in the eastern Pacific Ocean It can grow up to 45 meters long, as
many as 2 feet a day
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Phytophthora infestans
Supergroup: Chromalveolata It is an Oomycete Causes potato late blight, which turn
the roots of potato plants to black slime
Cause of the potato famine in Ireland
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Chlorarachnion reptans
Supergroup: Rhizaria It is a Chlorarachniophyte Is an autotrophic amoeba Has a nucleomorph (which shows that
it is an example of endosymbiosis with algae)
Contains pseudopodia
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Ammonia tepida
Supergroup: Rhizaria It is a Foram It is a found in marine environments
and can survive under high salinity Has been found in a variety of places,
including European seas, around Guam, in the Gulf of Mexico, and in the Mediterranean.
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Sticholonche zanclea
Supergroup: Rhizaria It is a Radiolarian Found in ocean depths of 99- 510
meters Have axopods that give the protists
their buoyancy
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Bonnemaisonia hamifera
Supergroup: Archaeplastida It is a Red algae It is brownish- red in color It is found in Ireland and Britain It is a seasonal algae, appearing
between October to March.
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Chlamydomonas nivalis
Supergroup: Archaeplastida It is a Chlorophyte Carotenoid pigments in this species
turn snow red, creating a “Watermelon Snow” effect
They can carry out photosynthesis despite the temperatures.
The snow actually acts as a shield for these organisms
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Chara braunii
Supergroup: Archaeplastida It is a Charophycean It is sometimes, although rarely, found
in the Baltic Sea at very low salinities It is mainly found in fresh water in
northeastern Europe, particularly Finland, Sweden, and Russia.
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Dictyostelium discoideum
Supergroup: Unikonta It is a Slime mold Is most commonly found on forest
floors Is used frequently in studying
multicellularity, because they are examples of how they mutate so that they can reproduce
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Difflugia corona
Supergroup: Unikonta It is a Gymnamoeba Eats by using pseudopods to catch the
surrounding organisms It uses pseudopods to move around as
well It is found in marshy areas
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Entamoeba histolytica
Supergroup: Unikonta It is an Entamoeba Is pathogenic Causes amebic dysentry Is spread by contaminated water, food,
or eating utensils
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Nuclearia thermophile
Supergroup: Unikonta It is a Nucleariid Has been found in warm spring water
in Japan Can exist as either spherical and
floating or a flattened amoeboid form They are heterotrophic
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Monosiga brevicollis
Supergroup: Unikonta It is a Choanoflagellate Has been a major topic of study because
its genome has revealed that it has many similarities to algae.
Because it has so many similarities, a hypothesis suggests that in early evolutionary history, a Choanoflagellate engulfed an algae, and this particular species is the result.