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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?

A general principle that underlies the natural world Signup and view all the answers

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

17th century 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?

Lack of advanced microscopic technology 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?

Louis Pasteur Signup and view all the answers

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

The universality of the genetic code suggests that all life evolved from the same original cells Signup and view all the answers

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

Lack of technology and microscopic observations Signup and view all the answers

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

It began collecting evidence to test and verify the idea that life requires life to exist Signup and view all the answers