p2 cell evolution
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Questions and Answers

What is a characteristic of the cell wall of Archaea?

  • It is composed of peptidoglycan
  • It is composed of a single layer of protein
  • It is composed of various polysaccharides and glycoconjugates (correct)
  • It is composed of lipids with branched hydrocarbons
  • What is the name of the phylum of Archaea that provides evidence on the transition from Archaea to Eukarya?

  • Thaumarcheota
  • Euryarcheota
  • Crenarcheota
  • Lokiarchaeum (correct)
  • What is the term used to describe Archaea that thrive in extreme environments?

  • Halophiles
  • Thermophiles
  • Extremophiles (correct)
  • Methanogens
  • What is the unique feature of the archaeal cytoplasmic membrane that allows it to function in extreme environments?

    <p>It contains unique lipids that are temperature and mechanically resistant</p> Signup and view all the answers

    What is the primary role of methanogens in the environment?

    <p>They are responsible for the majority of methane produced on earth</p> Signup and view all the answers

    In which type of environments are Archaea commonly found?

    <p>Extreme environments, such as hot springs and volcanic vents</p> Signup and view all the answers

    What percentage of the genome is unknown?

    <p>32%</p> Signup and view all the answers

    What is a characteristic of eukaryotic cells?

    <p>Membrane-bound organelles</p> Signup and view all the answers

    Which group of organisms is most closely related to animals?

    <p>Chaonoflagellates</p> Signup and view all the answers

    What is a characteristic of fungi as eukaryotes?

    <p>Heterotrophic nutrition</p> Signup and view all the answers

    Which group of organisms shares traits with plants like cellulose synthesizing proteins and flagellated sperm?

    <p>Green algae</p> Signup and view all the answers

    What percentage of the human diet is from flowering plants?

    <p>50-90%</p> Signup and view all the answers

    What is the common characteristic of Archaea's membrane lipids?

    <p>They have branched hydrocarbons</p> Signup and view all the answers

    Which of the following is NOT a characteristic of Archaea's cell wall?

    <p>Have a thick layer of peptidoglycan</p> Signup and view all the answers

    What is the significance of Lokiarchaeum in the context of Archaea and Eukarya?

    <p>It provides evidence on the transition from Archaea to Eukarya</p> Signup and view all the answers

    Why are Archaea able to thrive in extreme environments?

    <p>Because their cytoplasmic membrane contains unique lipids</p> Signup and view all the answers

    What is the term used to describe the environment in which Archaea are commonly found?

    <p>Extremophilic</p> Signup and view all the answers

    What is the primary role of Archaea in the ecosystem?

    <p>To produce methane</p> Signup and view all the answers

    What is the primary difference between autotrophic and heterotrophic eukaryotes?

    <p>The mode of energy production</p> Signup and view all the answers

    Which of the following groups of eukaryotes is most closely related to land plants?

    <p>Green algae</p> Signup and view all the answers

    What is the characteristic that distinguishes fungi from other eukaryotes?

    <p>Their nutritional mode and structural organization</p> Signup and view all the answers

    What is the common ancestor of all eukaryotes?

    <p>A group of ancient protists</p> Signup and view all the answers

    Which eukaryotic kingdom is classified based on the type of nutrition they obtain?

    <p>Animals</p> Signup and view all the answers

    What is the characteristic shared by green algae and land plants?

    <p>All of the above</p> Signup and view all the answers

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