Bacteria are the most abundant living things on the planet. In fact there are more bacteria in your mouth than there are vertebrates on the planet. This fascinating program explores the wide-ranging forms and characteristics of both archaebacteria and bacteria. Prokaryotic evolution and diversity are also discussed. Concepts and terminology include: prokaryote, eukaryote, peptidoglycan, ribosomal proteins, RNA polymerase, gram stain, Archaea, Bacteria, bacterial diseases, decomposition, and genetic engineering.