All of the above responses contributed to the discovery of cells, but the invention of the microscope played a crucial role. The magnifying glasses allowed for some level of observation, but it was the invention of the microscope that allowed scientists to study cells in detail and make significant discoveries. Additionally, the study of viruses and bacteria provided further insight into the existence and structure of cells. The observations made by scientists like Hooke and Pasteur also helped in understanding the existence of cells and their importance in biology.
