The BioEd Online website brings together a range of resources designed to help biology teachers educate their students about everything from microbes to genetics. This particular slide set was created by Dr. Raye L. Alford and it uses diagrams, charts, and a range of other illustrative materials. The topics covered here include mitochondria, eukaryotic genomes, and chromatin and DNA packaging. Visitors can download all of the slides at one time, or they can also search materials on each slide individually. It's worth noting that visitors can share these materials via Twitter and social media using the handy links on the site.