Which of the following is only found in archaea? glycerol diethers a nucleus a cell wall N-acetylmuramic acid

One organism found in a termite’s gut is Mixotrichia paradoxa. This strange creature looks like a single-celled swimming ciliate under low magnification. However, the electron microscope reveals that it contains spherical bacteria rather than mitochondria and has on its surface, rather than cilia, hundreads and thousands of spirilla and bacilla bacteria. You are the scientists who first observed this organism. How would you describe this organism- single-celled? Aggregate? Colony? Multicellular? Can the structure of this organism give you any insight into the evolution of eukaryotic cells? (Hint: the endosymbiosis hypothesis)

Archaea are often described as chimeric organisms having some features that are similar to bacteria and some that are similar to eukaryotes. Based on what you have just read in this section, provide two examples that illustrate the similarity of archaea (explain them) to bacteria; list and describe two examples of their similarity to eukaryotes

Which of the following is true of the flagellum in eukaryotes?     It is a long, thin extracellular (exterior) structure, with a basal motor embedded in the cell membrane/cell wall.     It is identical to the archaeal flagellum (archaellum) in composition and structure, but very different in composition and structure from bacterial flagella.     It is a long, thin structure containing bundles of microtubules and motor proteins, all within the plasma membrane.     Eukaryotic cells do not possess flagella.