protist

Examples of protist in the following topics:

• Protozoa

  • Originally, protozoa had been defined as unicellular protists with animal-like behavior (e.g., movement).
  • Protozoa were regarded as the partner-group of protists to protophyta, which have plant-like behavior (e.g., photosynthesis).
  • In general, protozoa are referred to as animal-like protists because they are capable of movement, or motile.
  • While there is no exact definition for the term protozoa, it often refers to a unicellular heterotrophic protist, such as the amoebas and ciliates.

• Historical Overview of Eukaryotes

  • The protists were understood to be "primitive forms," and thus an evolutionary grade, united by their primitive unicellular nature.
  • At the same time, work on the protist tree intensified, and is still actively going on today.

• Phylogeny of the Eukarya

  • Most of these lineages are protists.
  • The last common ancestor of all eukaryotes is believed to have been a phagotrophic protist with a nucleus, at least one centriole and cilium, facultatively aerobic mitochondria, sex (meiosis), a dormant cyst with a cell wall of chitin, cellulose, and peroxisomes.

• Malaria

  • Malaria is a mosquito-borne infectious disease that affects humans and other animals caused by various species of the protist Plasmodium.

• Basic Microbiology

  • This includes eukaryotes, such as fungi and protists, and prokaryotes.

• Verrucomicrobia

  • A number of as-yet uncultivated species have been identified in association with eukaryotic hosts including extrusive explosive ectosymbionts of protists and endosymbionts of nematodes residing in their gametes.

• Opisthokonts: Animals and Fungi

  • The opisthokonts, or "fungi/metazoa group", are a broad group of eukaryotes, including both the animal and fungus kingdoms, together with the eukaryotic microorganisms that are sometimes grouped in the paraphyletic phylum choanozoa (previously assigned to the protist "kingdom").

• Photoautotrophs and Photoheterotrophs

  • In terrestrial environments plants are the predominant variety, while aquatic environments include a range of phototrophic organisms such as algae, protists, and bacteria.

• Cooperation Among Microorganisms

  • It is important to remember that microorganisms include bacteria, archaea, fungi, and protists.

• Tissue Culture of Animal Viruses

  • However, there are also cultures of plants, fungi, and microbes, including viruses, bacteria, and protists.