Studying the chemistry of cells is vital in biology because it reveals the fundamental processes that sustain life. By understanding the molecular composition of cells, such as proteins, nucleic acids, and lipids, researchers can decipher how cells communicate, reproduce, and respond to their environments. This knowledge is essential for the development of therapeutics, advancements in genetic engineering, and the elucidation of metabolic pathways. Additionally, studying cellular chemistry enhances our comprehension of diseases at a molecular level, aiding in the discovery of novel treatments and diagnostics.