Multiple Choice
Which of the following statements is a component of classical 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 Anton van Leeuwenhoek’s key contribution that helped lay groundwork for later cell theory?
A
He proposed that all plants are composed of cells after observing cork and coined the term “cell.”
B
He concluded that all cells arise from pre-existing cells through cell division.
C
He improved microscopes and was among the first to observe and describe living single-celled organisms (“animalcules”) such as bacteria and protozoa.
D
He developed the electron microscope, enabling visualization of organelles like mitochondria and ribosomes.
Verified step by step guidance1
Understand the historical context of cell biology and the development of cell theory, which involved contributions from multiple scientists over time.
Identify Anton van Leeuwenhoek's role as an early microscopist who significantly improved the design and quality of microscopes, allowing for greater magnification and resolution.
Recognize that with his improved microscopes, van Leeuwenhoek was the first to observe and describe living single-celled organisms, which he called "animalcules," including bacteria and protozoa.
Note that this discovery was crucial because it revealed a previously unseen world of microscopic life, providing evidence that living organisms exist beyond what the naked eye can see.
Understand that van Leeuwenhoek's observations laid important groundwork for later cell theory by expanding knowledge of cellular life, even though he did not formulate the cell theory himself.
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