Biology: Chapter 8 - Cell: The Unit of Life

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Questions and Answers

What is the fundamental structural and functional unit of all living organisms?

  • Organ
  • Cell (correct)
  • System
  • Tissue

Who is credited with the discovery of the nucleus?

  • Theodore Schwann
  • Anton Von Leeuwenhoek
  • Matthias Schleiden
  • Robert Brown (correct)

Who first saw and described a live cell?

  • Robert Brown
  • Matthias Schleiden
  • Anton Von Leeuwenhoek (correct)
  • Theodore Schwann

What is necessary for independent living?

<p>A complete structure of a cell (D)</p>
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What term is used to describe organisms composed of a single cell?

<p>Unicellular (D)</p>
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What is a characteristic of unicellular organisms?

<p>They are capable of independent existence and performing essential functions of life (D)</p>
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What is the primary reason why anything less than a complete structure of a cell does not ensure independent living?

<p>Because it is not a fundamental structural and functional unit of life (D)</p>
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What is the primary contribution of Matthias Schleiden to the cell theory?

<p>He examined a large number of plants and observed that all plants are composed of different kinds of cells (C)</p>
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What is the significance of the invention of the microscope and its improvement leading to the electron microscope?

<p>It revealed all the structural details of the cell (B)</p>
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What is a characteristic of multicellular organisms?

<p>They are composed of many cells (D)</p>
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What is the primary characteristic that distinguishes living organisms from non-living things?

<p>The presence of cells (C)</p>
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