Cells perform various functions to maintain homeostasis from "summary" of NCERT Solutions - Biology for Class 12th by Dr. Madhurbhashini,Sargam Hans,Shanya Hans
Cells are the basic structural and functional unit of living organisms. They are responsible for maintaining homeostasis, which is the stable internal environment necessary for the survival of the organism. To achieve this, cells perform various functions that help regulate the internal conditions of the body. One of the key functions of cells in maintaining homeostasis is regulating the transport of materials in and out of the cell. This process involves the movement of molecules through the cell membrane, which acts as a barrier to control the exchange of substances. By regulating the transport of materials, cells can ensure that the internal environment remains stable and balanced. Cells also play a crucial role in regulating the pH levels of the body. They achieve this by maintaining a balance between acids and bases through processes like diffusion and active transport. This helps to prevent drastic changes in pH levels, which could be harmful to the organism. In addition, cells are involved in regulating the temperature of the body. They do this through processes like sweating and shivering, which help to maintain the body's temperature within a narrow range. By regulating temperature, cells can prevent overheating or hypothermia, both of which can be detrimental to the organism. Furthermore, cells are responsible for regulating the concentration of ions and other solutes in the body. This is essential for maintaining the proper functioning of cells and organs. By controlling the concentration of solutes, cells can ensure that essential processes like enzyme activity and muscle contraction can occur optimally.- The functions performed by cells to maintain homeostasis are crucial for the survival of living organisms. By regulating transport, pH levels, temperature, and solute concentration, cells help to create a stable internal environment that allows the body to function properly.
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