Final answer:
Cell biology is the science of cell structure and function, formerly known as cytology. It focuses on understanding the organization and processes of cells, which are the basic units of life.
Step-by-step explanation:
The science of cell structure and function was once known as cytology but is now referred to as cell biology. Cell biology is the study of cellular structure and function. It focuses on understanding the organization and processes of cells, which are the basic units of life. Cell biologists study how cells are structured, how they function, and how they interact with their environment.