Similarities and Differences Between Prokaryotic and Eukaryotic Cells
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Questions and Answers

Which type of cells has a nucleus and membrane-bound organelles?

  • Prokaryotic cells
  • Eukaryotic cells (correct)
  • Both prokaryotic and eukaryotic cells
  • None of the above

    • What is the major difference between prokaryotic and eukaryotic DNA?

  • Prokaryotic DNA is circular without proteins, while eukaryotic DNA is linear with proteins (correct)
  • Prokaryotic DNA is linear with proteins, while eukaryotic DNA is circular without proteins
  • Prokaryotic DNA is found in the nucleus, while eukaryotic DNA is found in the cytoplasm
  • Prokaryotic DNA is packaged into histones, while eukaryotic DNA is not

    • Which type of cell division involves mitosis or meiosis?

  • Neither prokaryotic nor eukaryotic cell division
  • Eukaryotic cell division (correct)
  • Prokaryotic cell division
  • Both prokaryotic and eukaryotic cell division

    • What provides motility in prokaryotic cells?

    <p>Rigid rotating flagellum made by flagellin</p> Signup and view all the answers

    Which phase of the cell cycle involves DNA replication?

    <p>S phase</p> Signup and view all the answers

    What holds the two polynucleotide strands together in a DNA double helix?

    <p>Hydrogen bonds between sugar and phosphate groups</p> Signup and view all the answers

    What is the function of topoisomerase during DNA replication?

    <p>Preventing overwinding of the DNA strands</p> Signup and view all the answers

    'Euchromatin' and 'heterochromatin' refer to different levels of what?

    <p>DNA compaction and accessibility</p> Signup and view all the answers

    Which nucleotide is present in RNA but not in DNA?

    <p>Uracil (U)</p> Signup and view all the answers

    What limits the number of times DNA can be replicated?

    <p>Telomeres shortening at each replication</p> Signup and view all the answers

    Which enzyme catalyzes the attachment of complementary bases during DNA replication?

    <p>DNA polymerase</p> Signup and view all the answers

    What is a major difference between prokaryotic and eukaryotic ribosomes?

    <p>Prokaryotic ribosomes are 70S, while eukaryotic ribosomes are 80S.</p> Signup and view all the answers

    During DNA replication, which enzyme prevents the overwinding of the DNA strands?

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

    What is the main reason DNA needs to be packed into molecules?

    <p>To protect against damage and fit into the cell</p> Signup and view all the answers

    Which phase of the cell cycle involves cells increasing in size and organelles replication?

    <p>G2 Phase</p> Signup and view all the answers

    What is the primary function of a nucleosome in DNA structure?

    <p>Package DNA into a condensed structure</p> Signup and view all the answers

    Which type of cells have a rigid rotating flagellum for motility?

    <p>Prokaryotic cells</p> Signup and view all the answers

    What is a characteristic that is unique to eukaryotic DNA compared to prokaryotic DNA?

    <p>Linear DNA with proteins to create chromatins</p> Signup and view all the answers

    In the context of cell reproduction, what is a key difference between prokaryotes and eukaryotes?

    <p>Binary fission vs. mitosis/meiosis</p> Signup and view all the answers

    Which phase of the cell cycle involves the replication of DNA?

    <p>S phase</p> Signup and view all the answers

    What is a key component of DNA that is involved in binding complementary bases together?

    <p>Sugar-phosphate backbone</p> Signup and view all the answers

    What is a role of topoisomerase during DNA replication?

    <p>Prevent overwinding of strands</p> Signup and view all the answers

    Which type of cells have a flexible waving cilia for motility?

    <p>Eukaryotic cells</p> Signup and view all the answers

    What is the major difference in the structure of chromatin between euchromatin and heterochromatin?

    <p>Euchromatin is loosely packed, while heterochromatin is tightly packed.</p> Signup and view all the answers

    What is the maximum amount of time that DNA can be replicated known as?

    <p>Hayflick's limit</p> Signup and view all the answers

    What is the function of histones in relation to DNA structure?

    <p>To organize the genome</p> Signup and view all the answers

    What does the process of initiation involve during DNA replication?

    <p>DNA going back to the region of replication at the fork</p> Signup and view all the answers

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