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.
Describe vesicle trafficking process.
The cells of our body are made up of many organelles and each one has its specific role to perform. Many organelles are involved in the synthesis of proteins within the cell by transcription and translation. Ribosomes and endoplasmic reticulum are the places of protein synthesis and later it is sorted and transported to its respective locations by the Golgi apparatus. So, it is necessary for the cell to send and receive proteins but proteins are macromolecules and needs to be transported by a specialized membrane structure called vesicles.
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