Matching (may be used more than once or not at all) a. plasma membrane b. centriale c. endoplasmic reticulum. d. Golgi apparatus e. lysosome f. mitochondrion g. nucleolus h. nucleus i. ribosome 1. A double-walled structure containing the cell's genetic code 2. A network of membranous tubes and canals that transports proteins 3. A stack of flattened sacs that process and package proteins 4. Site of manufacture of ribosomal RNA 4. A cylinder formed by parallel microtubules 6. An organelle that serves as the site of protein synthesis 7. A bubble containing digestive enzymes 8. May be rough (with ribosomes) or smooth (ribosome-free), 9. Allows communication between the internal and external cell environment 10. Forms secretory vesicles
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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