The organelles responsible for structural support,movement and communication between cells are_ mitochondria cytoskeletal elements rough endoplasmic reticulum extra cellular matrix membrane junctions
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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* Mitochondria:
- Is a double membrane structure found in most Eukaryotes
- it is called power house of the cell.
- Function : it generate chemical energy required for cell to perform biochemical reactions in the form of adenosine triphosphate ATP.
* Cytoskeletal elements:
- The cytoskeleton is a complex network of protein filaments present in the cytoplasm of all cells except bacteria
- It extends from nucleus to the cell membrane and is composed of proteins
Function: Helps cells maintain their shape and internal organization, mechanical support that helps cell to division and movement
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