15 Questions
Who discovered the cells in a cork slice in 1665?
Robert Hooke
Which biologist presented the cell theory that all plants and animals are composed of cells?
Schleiden
Who discovered the free living cells in pond water for the first time?
Leeuwenhoek
Who coined the term ‘protoplasm’ for the fluid substance of the cell?
Purkinje
Who suggested that all cells arise from pre-existing cells, expanding the cell theory?
Virchow
What is the function of the plasma membrane in a cell?
Permitting the entry and exit of some materials in and out of the cell
How do substances like carbon dioxide or oxygen move across the cell membrane?
Diffusion
What happens when there is a difference of concentration of CO2 inside and outside a cell?
CO2 moves out of the cell
Which process allows O2 to enter the cell when its concentration inside the cell decreases?
Diffusion
What term is used for the movement of substances from a region of high concentration to a region where its concentration is low?
Diffusion
What is the function of the plasma membrane in a cell?
It permits the entry and exit of some materials in and out of the cell.
How do substances like carbon dioxide or oxygen move across the cell membrane?
Simple diffusion
What term is used for the movement of substances from a region of high concentration to a region where its concentration is low?
Diffusion
What happens when there is a difference of concentration of CO2 inside and outside a cell?
CO2 moves out of the cell by the process of diffusion.
Who presented the cell theory that all plants and animals are composed of cells?
Theodor Schwann
Explore the significant milestones in the discovery of cells, from Robert Hooke's observation of cork cells to the development of the cell theory. Test your knowledge on the history of cell biology!
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