Cell Theory in Biology
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Questions and Answers

Who is credited with the discovery of cells when observing a piece of cork under the microscope?

  • Robert Hooke (correct)
  • Louis Pasteur
  • Theodor Schwann
  • Matthias Schleiden
  • According to cell theory, what are living organisms made up of?

  • Fungi
  • Organs
  • Cells (correct)
  • Bacteria
  • What did Matthias Schleiden and Theodor Schwann discover while studying cells of both animals and plants?

  • No differences between the two types of cells
  • Significant differences between the two types of cells (correct)
  • Existence of viruses in cells
  • Absence of cells in plants
  • What is the basic unit of structure in all living organisms according to cell theory?

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

    What is one of the key principles of cell theory regarding the origin of cells?

    <p>All cells come from pre-existing cells</p> Signup and view all the answers

    Which non-cellular entities do some biologists consider as living organisms, challenging the universal application of cell theory to all forms of life?

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

    Who is credited with the invention of the microscope?

    <p>Anton van Leeuwenhoek</p> Signup and view all the answers

    What did Robert Hooke name the tiny pores he discovered in cork under the microscope?

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

    Who made changes to the lenses used in microscopes, leading to improvements in optical quality?

    <p>Otto Schott</p> Signup and view all the answers

    What did Anton van Leeuwenhoek use to achieve a magnification of 270x in his unique microscope?

    <p>A small glass sphere</p> Signup and view all the answers

    Which type of microscope made it possible to view objects smaller than optical wavelengths?

    <p>Electron microscope</p> Signup and view all the answers

    What did Romans discover about objects under glass in the first century BC?

    <p>Objects appeared larger</p> Signup and view all the answers

    In what century did the expanded use of lenses in eyeglasses contribute to the wider spread use of simple microscopes?

    <p>13th century</p> Signup and view all the answers

    {{Following Hooke's discovery}}, what did others use for examining specimens with directly transmitted light?

    <p>{{Simple microscope with a single lens}}</p> Signup and view all the answers

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