[Solved] Describe the function of identification (ID)badges. Molecular Biology: A branch of biology that focuses on the structure and function of the molecules that make up cells, particularly DNA, RNA, and proteins. Microbiology: The branch of science concerned with microorganisms and their effects on other living organisms. Surface Anatomy: The study of the external features of the body and their relationship to deeper structures, as visible to the naked eye without dissection. Organelle: Specialized structures within a cell, each performing specific functions necessary for the cell's life, such as mitochondria, the Golgi apparatus, and the nucleus.