Cell Structure and Organelles Table Complete this table as you study. You may be assigned some structures/organelles to learn about in preparation for class. If so, come prepared to explain the role of those structures to your classmates. Some structures and organelles here have other component parts not explicitly listed but which you should include. For example, the cytoskeleton has Found in Found in Prokaryotes? Eukaryotes? Organelle/Structure (Y/N) (Y/N) Functions and other notes of importance multiple types of filaments with different functions. Found in Found in Prokaryotes? Eukaryotes? Organelle/Structure (Y/N) (Y/N) Notes on Structure and Function Fimbrae Cell wall Flagella Central vacuole Gap junctions Centrosome Glycocalyx Chloroplast Golgi apparatus Cilia Lysosome Microvilli Cytoskeleton Mitochondrion Desmosomes Nucleoid Extracellular Matrix
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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