How do cells function in living organisms?
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How do cells function in living organisms?
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Cells are the basic building blocks of life, and they play a critical role in the functioning of living organisms. The cells of an organism carry out a variety of functions, including:
Metabolism: The chemical reactions that take place within cells to provide energy and build molecules.
Growth and division: The processes by which cells increase in size and divide to form new cells.
Response to stimuli: The ability of cells to respond to changes in their environment, such as temperature, light, and chemicals.
Communication: The exchange of signals between cells, which is necessary for coordination and control of the functions of different parts of the organism.
Transport: The movement of materials into and out of cells, including the transport of nutrients, waste products, and signals.
Protection: The provision of a barrier to protect cells and the organism as a whole from harmful substances.
These functions are carried out by a variety of specialized structures within cells, including the cell membrane, cytoplasm, nucleus, and various organelles such as mitochondria, ribosomes, and endoplasmic reticulum. These structures work together to maintain the proper functioning of the cell and support the overall health of the organism.