Cellular homeostasis refers to the process by which cells maintain a stable internal environment despite changes in their external surroundings. This balance is crucial for the cell's survival and function, as it regulates factors such as temperature, pH, and the concentration of ions and nutrients. To achieve homeostasis, cells use various mechanisms, including cell membranes that control the movement of substances in and out, and cellular signaling pathways that help respond to environmental changes. These processes ensure that cells can perform their necessary functions efficiently and adapt to different conditions.