Molecular Biology: The Cell
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Questions and Answers

What is the basic unit of a living organism according to the text?

  • Organs
  • Tissues
  • Proteins
  • Cells (correct)

    • Which type of cells contain membrane-bound nuclei?

  • Plant cells
  • Eukaryotic cells (correct)
  • Animal cells
  • Prokaryotic cells

    • What are the building blocks of DNA and RNA called?

  • Monosaccharides
  • Fatty Acids
  • Nucleotides (correct)
  • Amino Acids

    • Which of the following is a purine base in DNA?

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

    What is the sugar present in RNA?

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

    Which category of cells are unicellular and do not contain membrane-bound organelles?

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

    What is the main difference between the sugar components of DNA and RNA?

    <p>DNA has an extra oxygen atom in its sugar component</p> Signup and view all the answers

    What is the chemical formula for a phosphate group?

    <p>PO₄³⁻</p> Signup and view all the answers

    Which nitrogenous base is found in RNA but not in DNA?

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

    Which part of a nucleotide is attached to the first carbon of the sugar?

    <p>Nitrogenous base</p> Signup and view all the answers

    What type of bond connects the phosphate group of one nucleotide to the sugar of the next nucleotide in a DNA or RNA strand?

    <p>Phosphodiester bond</p> Signup and view all the answers

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