Cellular biology is the study of cells, which are the basic building blocks of all living organisms. This field examines the structure, function, and behavior of cells, including how they interact with their environment. Cells can be classified into two main types: prokaryotic cells, which lack a nucleus, and eukaryotic cells, which have a defined nucleus and organelles. Researchers in cellular biology explore various processes such as cell division, metabolism, and cell signaling. Understanding these processes helps scientists learn about health, disease, and the development of new medical treatments. Cellular biology is essential for advancements in fields like genetics and biotechnology.