One page each is devoted to entries covering diverse topics from mitochondria, bacteria, and amphibians to T cells, chlorophyll, and fruit. Entries classify the item, highlight three important points, provide a sassy description, and conclude with three interesting facts. The bold and colorful Japanese-influenced graphics anthropomorphize scientific components, adding to the title's appeal for kids trying to get a handle on the basics of biology. A lot of information, some basic and some quite advanced, is offered, and is a fun introduction to a vast topic.