Studying Cells Tutorial Studying Cells Tutorial Major Events in Cell Biology History of studying cells Because of the limitations of the human eye, much of the early biological research concentrated on developing tools to help us see very small things. As imaging technology became more sophisticated, biological discoveries abounded. Below is a timeline detailing some of those major events in biology. When Scheiden and Schwann proposed the cell theory in 1838, cell biology research was forever changed.
Cells only arise from pre-existing cells.
The cell is the smallest form of life. The tutorial on prokaryotes, eukaryotes, and viruses explores this concept in more detail. All rights reserved.