Biology: Origin of Cells

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Questions and Answers

Who made the conclusion that cells divided to form new cells?

  • Robert Virchow
  • Antonie van Leeuwenhoek
  • Robert Remak (correct)
  • Louis Pasteur

What phrase did Robert Virchow propose in 1855 regarding the origin of cells?

  • Cellula ex materia
  • Cellula ex cellula
  • Cellula ex nihilo
  • Omnis cellula e cellula (correct)

Prior to the discoveries of Remak and Virchow, what was the prevailing belief about the origin of life?

  • Life arose through divine intervention
  • Life arose from pre-existing cells
  • Life had no origin, it has always existed
  • Life arose spontaneously from non-living matter (correct)

What is the principle that cells only come from pre-existing cells an example of?

<p>A general principle that underlies the natural world (D)</p> Signup and view all the answers

Until what century was the consensus that life was spontaneously generated?

<p>17th century (C)</p> Signup and view all the answers

What was the main reason why the belief that life could arise from non-living matter was prevalent before the 17th century?

<p>Lack of advanced microscopic technology (A)</p> Signup and view all the answers

Which scientist's experiment provided sufficient verification to convince scientists that cells can only come from pre-existing cells?

<p>Louis Pasteur (C)</p> Signup and view all the answers

What is the main reason why the universal acceptance that cells come from pre-existing cells is supported?

<p>The universality of the genetic code suggests that all life evolved from the same original cells (D)</p> Signup and view all the answers

What was the main reason why the belief in spontaneous generation was prevalent before the 17th century?

<p>Lack of technology and microscopic observations (B)</p> Signup and view all the answers

What was the main contribution of Francesco Redi's experiment with maggots and rotting meat?

<p>It began collecting evidence to test and verify the idea that life requires life to exist (C)</p> Signup and view all the answers

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