How does the cell maintain homeostasis in the body?

Cells maintain homeostasis in the body through various processes such as temperature regulation, osmoregulation, nutrient uptake, and waste removal. These processes exchange energy and materials between the cells and their surroundings, which helps in maintaining a stable internal environment that helps them to function properly. This stable environment is called homeostasis. 

It is the cell membrane that is primarily responsible for maintaining homeostasis. The selectively permeable cell membrane controls the movement of substances across it, allowing only certain substances into and out of the cell. This helps to regulate the concentration water and solutes within the cell, maintaining a stable internal environment that is different from the external environment.