Among biological entities, cells are regarded as of special importance since they are widely viewed as the simplest organized systems that are unambiguously alive. Cell biology is the study of cell structure and function, and it revolves around the concept that the cell is the fundamental unit of life. Focusing on the cell permits a detailed understanding of the tissues and organisms that cells compose. Some organisms have only one cell, while others are organized into cooperative groups with huge numbers of cells. On the whole, cell biology focuses on the structure and function of a cell, the most general properties shared by all cells, to the unique and highly intricate functions particular to specialized cells. Biotechnology uses techniques and information from cell biology to genetically modify crops to produce alternative characteristics; to clone plants and animals; to produce and ensure high quality food is available at lower costs; to produce purer medicines and in time organs for the many people who need transplants.

Sreelakshmi Sethumadhavan

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