The cell is recognized as the basic structural and functional unit of all known organisms. These microscopic compartments encapsulate life processes, maintaining internal homeostasis through specialized structures and biochemical reactions. Cells are generally categorized into two major types: prokaryotic cells, which are simpler and lack a membrane-bound nucleus, and eukaryotic cells, which possess a complex nucleus and various internal organelles. Organelles, such as mitochondria and endoplasmic reticulum, perform specific functions essential for cellular survival, including energy conversion, protein synthesis, and waste management. Life, from simple bacteria to complex multicellular organisms, is fundamentally defined by the organization and interaction of these fundamental biological units.