Cell biology is a branch of biology that focuses on studying the structure, function, and behavior of cells. Cells are the basic building blocks of all living organisms and understanding their biology is crucial for understanding the overall functioning of organisms. Cell biologists study various aspects of cells including cell organelles, cell division, cell signaling, and interactions between cells. This field plays a vital role in understanding diseases, developing new medical treatments, and advancing biotechnology. Cell biology often involves the use of techniques such as microscopy, genetic engineering, and molecular biology to study cells at a molecular level.