Cell Biology is the study of cells, the basic structural and functional units of life. It explores the various components within cells, such as the nucleus, mitochondria, and cell membrane, and how these structures interact to maintain life processes. Key areas of study include cellular processes like energy production, protein synthesis, cell division, and signaling pathways. Techniques like microscopy and flow cytometry are commonly used to study cell behavior and function. Understanding cell biology is crucial for fields like medicine, genetics, and biotechnology, as it helps explain how organisms grow, develop, and respond to diseases.