Cell Theory Concepts
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Cell Theory Concepts

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Questions and Answers

What is one of the main ideas established by Rudolf Virchow in relation to cell theory?

  • Cells can arise spontaneously.
  • All cells contain identical genetic material.
  • Cells are the largest units of living organisms.
  • Cells only arise from the division of existing cells. (correct)

    • Which of the following statements is NOT a part of the cell theory?

  • Cells are the smallest unit of life.
  • Cells can survive without a membrane. (correct)
  • Cells arise only from pre-existing cells.
  • Living organisms are composed of one or more cells.

    • What do cells contain that is vital for their activities?

  • Genetic material that directs cellular functions. (correct)
  • Chloroplasts for energy production.
  • Mitochondria that absorb all nutrients.
  • A rigid structure for support.

    • What distinguishes cells from non-living structures?

    <p>Cells can perform chemical reactions.</p> Signup and view all the answers

    What is the smallest unit of life according to cell theory?

    <p>Cell.</p> Signup and view all the answers

    What term is used to describe organisms that are made up of a single cell?

    <p>Unicellular organisms</p> Signup and view all the answers

    Who was the first scientist to observe and name cells?

    <p>Robert Hooke</p> Signup and view all the answers

    How did Robert Hooke describe the appearance of cells he observed?

    <p>As empty boxes surrounded by walls</p> Signup and view all the answers

    What significant contribution did Anton van Leeuwenhoek make to microbiology?

    <p>He observed bacteria and protozoa for the first time.</p> Signup and view all the answers

    What does the term 'multicellular organisms' refer to?

    <p>Organisms made of multiple specialized cells</p> Signup and view all the answers

    What year did Theodor Schwann report that all animals are made up of cells?

    <p>1839</p> Signup and view all the answers

    Why are multicellular organisms able to perform complex functions?

    <p>They have specialized cells that work together.</p> Signup and view all the answers

    Which of the following is NOT a characteristic of unicellular organisms?

    <p>They are always invisible to the naked eye.</p> Signup and view all the answers

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