Part II. Direction: Arrange the order of events of the cell cycle by writing no 1-8. 1. The cell replicates the genetic material. 2. The chromosomes align at the equatorial plate. 3. The two new cells separate through cytokinesis. 4. The cell increases in size and cellular contents duplicates. 5. The sister chromatids move apart towards the opposite poles. 6. The nuclear membrane begins to reform, and spindle fiber disappear. 7. The cell ensures that all of the chromosomes have been replicated and not damaged. 8. The nucleolus disintegrates and spindle fibers appear and begin to attach to the chromosomes.
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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