Multiple Choice
Which statement is a core component of modern 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 Antoine van Leeuwenhoek’s most important contribution that helped shape ideas later incorporated into cell theory?
A
He identified the nucleus as a distinct cellular structure and suggested it controls cell function.
B
He concluded that all cells arise from pre-existing cells through cell division, rejecting spontaneous generation at the cellular level.
C
He proposed that all living organisms are composed of one or more cells and that the cell is the basic unit of life.
D
He used improved single-lens microscopes to make detailed observations of living microorganisms ("animalcules"), providing early evidence that microscopic life exists.
Verified step by step guidance1
Understand the historical context of cell biology and the development of cell theory, which includes key contributions from various scientists.
Recognize that Antoine van Leeuwenhoek is famous for his advancements in microscopy, specifically improving single-lens microscopes to observe tiny living organisms.
Identify that his most important contribution was the detailed observation of living microorganisms, which he called "animalcules," providing the first evidence of microscopic life.
Note that this discovery was crucial because it expanded the understanding of life beyond what was visible to the naked eye and laid the groundwork for later cell theory concepts.
Distinguish his contribution from other cell theory milestones, such as the identification of the nucleus, the idea that all cells come from pre-existing cells, and the concept that all living organisms are made of cells.
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