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Protozoa (sg.: protozoan or protozoon; alternative plural: protozoans) are a polyphyletic group of single-celled eukaryotes, either free-living or parasitic, that feed on organic matter such as other microorganisms or organic debris.
Some ciliates are mouthless and feed by absorption , while others are predatory and feed on other protozoa and in particular on other ciliates. Some ciliates parasitize animals , although only one species, Balantidium coli , is known to cause disease in humans.
May 25, 2024 · protozoan, organism, usually single-celled and heterotrophic (using organic carbon as a source of energy), belonging to any of the major lineages of protists and, like most protists, typically microscopic. All protozoans are eukaryotes and therefore possess a “true,” or membrane-bound, nucleus.
Protozoa. Protozoa are one-celled animals found worldwide in most habitats. Most species are free living, but all higher animals are infected with one or more species of protozoa. Infections range from asymptomatic to life threatening, depending on the species and strain of the parasite and the resistance of the host.
- Robert G. Yaeger
- 1996
- 1996
Protozoários ou Protozoa (do latim proto "primeiro" e zoon "animal") são microrganismos eucarióticos unicelulares e heterotróficos (não possui a capacidade de produzir seu próprio alimento, e por isso se alimenta de seres vivos).
protozoan. microbiology. protozoology, the study of protozoans. The science had its beginnings in the latter half of the 17th century when Antonie van Leeuwenhoek of the Netherlands first observed protozoans by means of his invention, the microscope. Protozoans are common, and they are of particular interest to man because they cause such ...
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