Exploring the Cell Surface Structures of Archaea
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Questions and Answers

Which two domains of life are recognized in the phylogenetic tree of life?

  • Prokaryotes and bacteria
  • Archaea and bacteria
  • Archaea and eukaryotes
  • Prokaryotes and eukaryotes (correct)

    • Which domain of life shares many metabolic traits with bacteria?

  • Eukaryotes
  • Archaea (correct)
  • Prokaryotes
  • None of the above

    • How many major phyla of Archaea have been identified so far?

  • Seven (correct)
  • Five
  • Ten
  • Two

    • Which domain of life has distinctive modified bases in their tRNA molecules?

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

    What is the structure of RNA pol II in archaea similar to?

    <p>Eukaryotes (B)</p> Signup and view all the answers

    Why is it difficult to study archaea?

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

    Which of the following is a key trait found only in archaea?

    <p>Ether-linked membrane lipids (D)</p> Signup and view all the answers

    What is the structure of archaea usually like?

    <p>0.5 to 5 μm in diameter (C)</p> Signup and view all the answers

    What is the composition of the archaeal cell membrane?

    <p>Isoprene chains (B)</p> Signup and view all the answers

    Which energy source do archaeal flagella use?

    <p>ATP (B)</p> Signup and view all the answers

    Which organisms are responsible for methane production in our atmosphere?

    <p>Archaea (B)</p> Signup and view all the answers

    What is the function of bacteriorhodopsin in haloarchaea?

    <p>Pumping out H+ (B)</p> Signup and view all the answers

    What is a unique feature of archaeal genome structure?

    <p>Presence of introns (B)</p> Signup and view all the answers

    Which of the following is true about archaeal gene regulation?

    <p>Archaeal gene regulation is a combination of bacterial and eukaryotic mechanisms (B)</p> Signup and view all the answers

    What is a distinguishing feature of tRNA molecules in archaea?

    <p>They contain modified bases (C)</p> Signup and view all the answers

    What is a challenge in studying archaea?

    <p>Lack of genetic tools (A)</p> Signup and view all the answers

    What is a unique characteristic of archaeal cell division?

    <p>It is a combination of bacterial and eukaryotic cell division mechanisms (D)</p> Signup and view all the answers

    Why don't archaea typically cause disease?

    <p>They have a different cell structure compared to pathogens (A)</p> Signup and view all the answers

    Which domain of life do archaea share many metabolic traits with?

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

    Which domain of life has distinctive modified bases in their tRNA molecules?

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

    Which domain of life has a transcription machinery and gene structure similar to that of eukaryotes?

    <p>Archaea (B)</p> Signup and view all the answers

    Which domain of life employs distinct machineries for cell division?

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

    Which domain of life has members with different chromosome copy numbers and replication control systems?

    <p>Archaea (B)</p> Signup and view all the answers

    Which of the following is NOT a characteristic of archaeal gene regulation?

    <p>RNA pol II structure is similar to that of eukaryotes (A)</p> Signup and view all the answers

    Which of the following is a challenge in studying archaea?

    <p>Members of distinct phyla have different chromosome copy numbers (B)</p> Signup and view all the answers

    Which domain of life shares many metabolic traits with bacteria?

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

    What is a unique feature of archaeal genome structure?

    <p>Distinct chromosome copy numbers (D)</p> Signup and view all the answers

    Which domain of life do archaea share many metabolic traits with?

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

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