Multiple Choice
Which option correctly lists the three main tenets of classic cell theory?
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1. Overview of Cell Biology
History of Cell Biology
Multiple Choice
In the history of cell biology, what was Francesco Redi's key contribution that influenced later ideas about cell theory and the origin of life?
A
He identified the nucleus as a common feature of plant and animal cells.
B
He proposed that all cells arise from pre-existing cells ("Omnis cellula e cellula").
C
He used controlled experiments with meat in open and sealed containers to show that maggots arise from flies’ eggs rather than spontaneous generation.
D
He first observed cells in cork using a compound microscope and coined the term "cell".
Verified step by step guidance1
Understand the historical context of cell biology and the debate about the origin of life, particularly the idea of spontaneous generation, which suggested that living organisms could arise from non-living matter.
Recognize Francesco Redi's experimental approach: he designed controlled experiments using meat placed in both open and sealed containers to test whether maggots appeared spontaneously or from flies' eggs.
Analyze the results of Redi's experiments, noting that maggots only appeared in the open containers where flies could lay eggs, and not in the sealed containers, thereby disproving spontaneous generation for larger organisms.
Connect Redi's findings to the broader implications for cell theory and the origin of life, as his work provided early evidence that life arises from existing life, influencing later principles such as 'Omnis cellula e cellula' (all cells come from pre-existing cells).
Distinguish Redi's contribution from other key milestones in cell biology, such as the identification of the nucleus, the coining of the term 'cell', and the formal statement of cell theory by later scientists.
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