Did the Discovery of the Cell Membrane Occur Before the Discovery of Cells?

💡 The Answer

• Early microscopists saw cell outlines but lacked the concept of a distinct membrane.
• Robert Hooke in 1665 first observed cell walls in cork, not the plasma membrane.
• The idea of an osmotic barrier emerged in the 19th century from plant plasmolysis studies.
• The term 'cell membrane' was only widely adopted after the 1950s electron microscopy.