Synthesizes ribosomes Receives polypeptides from the ER and modifies them and packages them for export Found in both prokaryotes and eukaryotes, these organelles synthesize polypeptide chains Stiff outer coating outside of the plasma membrane in plants that provides support and rigidity Responsible for the breakdown of toxins and poisons Organelles believed to have evolved from the endosymbiosis of an ancient prokaryote Used to transport materials around the cell Comprised of both a smooth and rough portion Used for locomotion Choose... Choose... Choose... Choose... Choose... Choose... Choose... Choose... Choose... ( 4 4 O O 4) 4 O
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.
Introduction
Cell, in biology, is the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast.
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