Multiple Choice
Which option correctly lists the three basic parts of the cell theory?
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1. Overview of Cell Biology
History of Cell Biology
Multiple Choice
In the history of cell biology, how did Antonie van Leeuwenhoek contribute to the development of cell theory?
A
He discovered the cell nucleus and argued it controls cell division and heredity.
B
He used handcrafted single-lens microscopes to observe and describe living microorganisms (“animalcules”), providing early evidence that microscopic life exists.
C
He developed the first cell-staining dyes and used them to identify chromosomes during mitosis.
D
He proposed that all living organisms are composed of cells and that cells arise only from preexisting cells.
Verified step by step guidance1
Understand the historical context of cell biology and the development of cell theory, which involves contributions from multiple scientists over time.
Identify Antonie van Leeuwenhoek's specific role: he was known for creating high-quality single-lens microscopes by hand, which allowed him to observe tiny living organisms.
Recognize that van Leeuwenhoek's observations of 'animalcules' (now known as microorganisms) provided the first direct evidence of microscopic life, which was crucial for the emerging understanding of cells.
Distinguish his contribution from others: he did not discover the cell nucleus, develop staining dyes, or propose the cell theory principles about cell origin; those were contributions by other scientists.
Summarize that van Leeuwenhoek's main contribution was the use of his microscopes to observe and describe living microorganisms, thereby expanding the scope of biological study to include microscopic life.
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