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protist

protist

1 8.6
A living thing usually made of one cell with a nucleus that is not an animal, plant, or fungus
  • noun
  • /ˈproʊtɪst/
  • Specialized
: protista
  • Much larger than bacteria, single-celled protists are distinguished by a more complex metabolism and DNA that is concentrated in a nucleus.

Examples

  • Yup, the protist nourishes the clam in environments that are less than ideal for thriving.

  • Two protists of the same species come together, their cell walls dissolve at the boundary, and they join temporarily as one unit.

    Academic text (2002)
  • Your temperature, for example, even protists will seek places of the right temperature.

  • And in turn, the protist is sheltered within the clam's shell.

  • The data set he's generated so far, collected from previous research conducted by others, includes plants, animals, fungi, and a couple of protists.

    Academic text (2007)
  • Photosynthesis had evolved in a few Monerans, but the three nutritional modes became well established only after the first eukaryotic protists evolved through endosymbiosis.

    Academic text (2012)
  • Many protists live in freshwater environments, where they play crucial ecological roles.

  • Microscopic protists, such as amoebas and diatoms, can be found in ocean waters.

  • Researchers study protists to better understand the evolution of eukaryotic organisms.

Synonyms

protistan
vsprotist
  • Specialized
1 9.9

A single-celled organism like algae that is not an animal or plant

is the broader group excluding animals plants and fungi and often living in water
protoctist
vsprotist
  • Specialized
1 9.9

Small living things made of one cell or a few cells, like algae, often found in water

is the general name for diverse mostly unicellular eukaryotes living often in water

Surface Forms

protist singular
protists plural

Morphology

protist = prot + ist

Although historically built from the combining form prot- ('first') + -ist, the modern taxonomic meaning 'a diverse group of mostly unicellular eukaryotes' is a specialized biological category not directly inferable from the morphemes by an average learner.

Etymology

Protist comes from the prefix proto- meaning 'first', the same part you see in prototype. Scientists used this name for early or simple life forms, so a protist is often a mostly single-celled organism that is not an animal, plant, or fungus.