Plate Tectonics

Earth Structure: A Virtual Journey to the Center of Earth


While we have always been made of cells, it took us a long time to see them. What innovation below was critical to the discovery of cells, showing the relationship of science and technology?
Sorry, that is incorrect. Initial observations of cells were not a direct attempt to disprove spontaneous generation. What technology made it possible to see cells?
Correct! Van Leeuwenhoek used his skills at glass blowing with Robert Hooke’s designs to make better microscopes and see microscopic life forms.
The Cell Theory is based on two observations. That all living things are made of cells and that all cells come from other cells. Which of these observations was made first?
van Leeuwenhoek called the organisms he viewed in his microscope “little animals” and described parts like legs, fins, and heads. Later studies would show that these organisms have a nucleus. What kind of cells did he likely view?