Key Term Matching 1. Interphase 2. Nucleus 3. S phase 4. Centromere 5. Metaphase 6. Ribosome 7. Nucleolus 8. Cell 9. Centriole 10. RER 11. Prophase 12. Mitochondrion 13. Lysosome 14. SER 15. Tissue 16. Cytokinesis 17. Organ 18. Organelles 19. Cytosol 20. System 21. Telophase 22. Golgi apparatus 23. Mitosis 24. Plasma membrane 25. Anaphase نے B. C. D. E. F. G. H. I. J. K. L. M. N. O. P. Q. R. S. T. U. V. W. X. Y. Sister chromatids line up on equator Connects two sister chromatids Site of ATP synthesis Structures within the cell Sister chromatids split into chromosomes Outer boundary of a cell Group of organs related by function Ribosomes attach to its outer surface Period of cell division Chromosomes reach cell poles DNA replication takes place Time of cell growth and function Involved in lipid synthesis Cell divides into two daughter cells Packages proteins for secretion Organizes spindle fibers Houses DNA Nuclear envelope breaks down, spindle fibers form An area found inside the nucleus Smallest unit that is alive Group of identical cells Organelles are suspended in this semi- solid fluid Contains digestive enzymes Composed of two or more tissues Site of mRNA translation
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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