- Until recently, the kingdom Protista was a designation that included many single-celled eukaryotes. This group was classified into the Protozoa or animal-like protists, the algae or plant-like protists, and the fungus-like protists. Recent molecular evidence has shown that the Protista are not monophyletic. The word “protist” is now used as a generic name for single-celled eukaryotes and it does not imply a phylogenetic grouping. - Protists are members of at least six different candidate kingdoms within the domain Eukarya. The most ancient of these are the Archaezoa and the Euglenozoa, both of which branched off the phylogenetic tree soon after the domains Bacteria and the Archaea. - Although their genome contains genes that code for mitochondrial proteins, members of the candidate kingdom Archaezoa lack mitochondria. Giardia sp. is a common intestinal parasite that is a member of the candidate kingdom Archaezoa. - One of the two major groups within the candidate kingdom Euglenozoa is the Euglenoids. You may be familiar with Euglenoids of the genus Euglena. Euglenoids are mixotrophic; they obtain nutrients through heterotrophic feeding as well as through photosynthesis. - The second group within the candidate kingdom Euglenozoa is the Kinetoplastids. A structure called a kinetoplast, which consists of a mitochondrion and associated extranuclear DNA, is characteristic of this group. An example is Trypanosoma gambiense, which causes African sleeping sickness.

Organisms that are mixotrophic

- are autotrophic and heterotrophic

11.4.1 Protists: Archaezoa and Euglenozoa Flashcards by Irina Soloshenko

This is a private class.

You need a Pro account to access a Private class
I have an access code

To request access, contact Irina Soloshenko, and ask that they share the class directly with you, using the email address you use for your Brainscape account.

Brainscape's Knowledge GenomeTM

11.4.1 Protists: Archaezoa and Euglenozoa Flashcards

Brainscape's Knowledge Genome^TM