The cells labeled A came from my (Riva's) cheek. The cells labeled B came from an aquatic plant called Elodea. Which is true, and how can you tell from the images? O The cheek cell is eukaryotic because you can see the nucleus. The Elodea cells are prokaryotic because you can see the chloroplasts. O Both cells are eukaryotic. You can see the nucleus in the cheek cells, and chloroplasts in the Elodea cells. O Both celis are prokaryotic. You can't see any membrane bound organclles in these cells. O Both cells are eukaryotic. You can see the nucleus in the cheek cells. and many nuclei in the Elodea cells.
Structure and Composition of Cell Membrane
Despite differences in structure and function, all living cells in multicellular organisms are surrounded by a cell membrane. Just like the outer layer of the skin separates the body from its environment similarly, the cell membrane, also known as 'plasma membrane,' separates the inner content from its exterior environment.
Cell Membrane
The cell membrane is known by different names like plasma membrane or cytoplasmic membrane, or biological membrane. The term "cell membrane" was first introduced by C. Nageli and C. Cramer in the year 1855. Later on, in 1931, the term "plasmalemma" for cell membrane was given by J. Plowe. The cell membrane separates the cell's internal environment from the extracellular space. This separation allows the protection of cells from their environment.
Prokaryotes vs Eukaryotes
The cell is defined as the basic structural and functional unit of life. The cell membrane bounds it. It is capable of independent existence.
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