Answer:
Throughout history, various scientists and biologists have referred to this structure by many names. The term “plasma membrane” was originally derived from the German word “Plasmamembran”, a word coined by Carl Wilhelm von Nägeli – a Swiss botanist who used this term to describe the thin film that forms when the sap of an injured cell comes in contact with water.
Moreover, the term “protoplasm” was in use before the advent of electron microscopy and differential centrifugation – which means it was difficult to help identify cell organelles and other cellular structures unambiguously. Hence, one could say that the term “plasma membrane’ is deemed obsolete by today’s standards.
Other less common and (obsolete) terms that refer to the plasma membrane include:
Plasmahaut
Hautschicht
Plasmatic membrane
Cytoplasmic membrane
Plasmalemma
Explanation:
The plasma membrane, also called the cell membrane, is the membrane found in all cells that separates the interior of the cell from the outside environment. While an organelle is a subcellular structure that has one or more specific jobs to perform in the cell, much like an organ does in the body.
