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 (D)</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 (C)</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 (C)</p> Signup and view all the answers

What percentage of the genome is unknown?

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

What is a characteristic of eukaryotic cells?

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

Which group of organisms is most closely related to animals?

<p>Chaonoflagellates (A)</p> Signup and view all the answers

What is a characteristic of fungi as eukaryotes?

<p>Heterotrophic nutrition (A)</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 (C)</p> Signup and view all the answers

What percentage of the human diet is from flowering plants?

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

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

<p>They have branched hydrocarbons (D)</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 (A)</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 (A)</p> Signup and view all the answers

Why are Archaea able to thrive in extreme environments?

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

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

<p>Extremophilic (D)</p> Signup and view all the answers

What is the primary role of Archaea in the ecosystem?

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

What is the primary difference between autotrophic and heterotrophic eukaryotes?

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

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

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

What is the characteristic that distinguishes fungi from other eukaryotes?

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

What is the common ancestor of all eukaryotes?

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

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

<p>Animals (C)</p> Signup and view all the answers

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

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

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