Biological databases are organized collections of biological information that store data related to genes, proteins, and other biological entities. They facilitate the storage, retrieval, and analysis of vast amounts of biological data, making it easier for researchers to access and share information. Examples include GenBank, which contains DNA sequences, and UniProt, which provides protein sequence and functional information. These databases are essential for various fields, including genomics, proteomics, and bioinformatics. They support scientific research by enabling data comparison, annotation, and visualization, ultimately contributing to advancements in areas like medicine and agriculture.