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protozoan
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Noctiluca scintillans amoeba representative protozoans
Discover how individual cilia employ viscous drag to coordinate power and recovery strokes for locomotion
glass model of Volvox dinoflagellate red tide oligotrich; Halteria grandinella Trypanosoma cruzi blackwater fever
For Students
protozoan summary
Quizzes
Sea otter (Enhydra lutris), also called great sea otter, rare, completely marine otter of the northern Pacific, usually found in kelp beds. Floats on back. Looks like sea otter laughing. saltwater otters
Animal Group Names
Lion (panthera leo)
Deadliest Animals Quiz
Mute swan with cygnet. (birds)
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vulture. An adult bearded vulture at a raptor recovery center. The Gypaetus barbatus also known as the Lammergeier or Lammergeyer, is a bird of prey and considered an Old World vulture.
Animal Factoids
Mushrooms growing in forest. (vegetable; fungus; mushroom; macrofungi; epigeous)
Science at Random Quiz
Read Next
Army of deadly Microbes
Meet the Microbes: 5 Tiny Protozoans and Algae
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Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.
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Los Angeles Police Department wanted flyer on Elizabeth Short, aka the "Black Dahlia," who was brutally murdered in January 1947. The FBI supported the Los Angeles Police Department in the case, including by identifying Short through her fingerprints that
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Woman tied to a ducking stool, a method of punishment by means of humiliation, beating, or death. (cucking stool)
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Thanksgiving Celebration Traditional Dinner Setting Food Concept
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Super Typhoon Noru over the western tropical Pacific Ocean as observed by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA Aqua satellite July 31 2017
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A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England
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New York NY/ USA- November 23, 2018 Hordes of shoppers throng the Macy's Herald Square flagship store in New York looking for bargains on the day after Thanksgiving, Black Friday.
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protozoan: Media

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Videos

Discover how individual cilia employ viscous drag to coordinate power and recovery strokes for locomotion
Learn about the coordinated beating of cilia, which propel protozoans through water.
Video: Encyclopædia Britannica, Inc.
Analyze the structure and motion of cilia and flagella
Learn about the structure and movement of cilia and flagella.
Video: Encyclopædia Britannica, Inc.
Study the habits of amoebae, vorticellas, paramecium, and other protozoans under a microscope
Paramecium and other species of single-celled organisms and the variety...
Video: Encyclopædia Britannica, Inc.
Observe protozoan microorganisms from a drop of pond water under optical and electron microscopes
Paramecia and other single-celled organisms in pond water.
Video: Encyclopædia Britannica, Inc.

Images

Noctiluca scintillans
Dinoflagellate Noctiluca scintillans (magnified).
Douglas P. Wilson
amoeba
Amoeba (magnified).
Russ Kinne/Photo Researchers
representative protozoans
Representative protozoans. The phytoflagellate Gonyaulax is one of the dinoflagellates...
© Merriam-Webster Inc.
glass model of Volvox
Glass model of protozoan colony Volvox (magnified about 40×).
Courtesy of the American Museum of Natural History, New York City
dinoflagellate
The dinoflagellate Ceratium tripos (magnified).
© blickwinkel/Alamy
red tide
Red tide, Tampa Bay, Florida, showing fish kill and red coloration caused by dinoflagellates.
R.F. Head—The National Audubon Society Collection/Photo Researchers
oligotrich; Halteria grandinella
The ciliated oligotrich Halteria grandinella.
J.M. Langham
Trypanosoma cruzi
Photomicrograph of Trypanosoma cruzi, the causative agent of Chagas disease.
Dr. Myron G. Schultz/Centers for Disease Control and Prevention (CDC) (Image Number: 613)
blackwater fever
Micrograph of blood cells showing ring-forms (circular organisms within the cells)...
Centers for Disease Control and Prevention (CDC) (Image Numer: 5856)
Trichomonas vaginalis
Trichomonas vaginalis.
A.L. Leu
suctorian; Podophrya fixa
The ciliated suctorian Podophrya fixa.
Walter Dawn
Plasmodium vivax
Plasmodium vivax in red blood cell.
A.L. Leu
conjugation
Two hypotrichs in conjugation.
Damián H. Zanette
malaria life cycle
Life cycle of a malaria parasite.
Encyclopædia Britannica, Inc.
Entamoeba coli
Entamoeba coli.
A.L. Leu
The role of lysosomes in intracellular digestionDigestion...
Encyclopædia Britannica, Inc.
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