Multiple Choice
In the history of cell biology, what was Anton van Leeuwenhoek’s key contribution that helped lay groundwork for later 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 Antonie van Leeuwenhoek’s key contribution that influenced the development of cell theory?
A
He proposed that all living organisms are composed of cells and that cells arise only from preexisting cells.
B
He discovered the cell nucleus and argued it controls cell division and heredity.
C
He used improved single-lens microscopes to observe and describe living microorganisms (“animalcules”), providing early evidence that microscopic life exists.
D
He developed the first electron microscope, allowing visualization of viruses and cell ultrastructure.
Verified step by step guidance1
Understand the historical context of cell biology and the development of cell theory, which involves contributions from various scientists over time.
Identify Antonie van Leeuwenhoek's role as an early microscopist who improved the design of single-lens microscopes, enhancing their magnification and clarity.
Recognize that van Leeuwenhoek was the first to observe and describe living microorganisms, which he called "animalcules," providing direct evidence of microscopic life.
Note that his observations were crucial because they revealed a previously unseen world of living organisms, influencing later scientists to consider cells as fundamental units of life.
Distinguish van Leeuwenhoek's contribution from other milestones, such as the proposal of cell theory by Schleiden and Schwann, the discovery of the nucleus, and the invention of electron microscopy.
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