4. The micrograph below is 12,000X enlargement. Based on this, determine the actual size (length) of the dark oval specimen. 0.00333, mm Scale size -ucm-u EniNgenent 12000 Actual sizer seale sizelenlergement image ucm (12000=0.00333mm Use the choices from #2 above to respond to the following: This specimen is
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
The cell is life's most fundamental structural and functional unit. Every cell has a cytoplasm that is surrounded in a membrane and includes a variety of biomolecules such as proteins and nucleic acids.
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