PUBLIC MARKS from kathleen_vincent with tag science

A peer-reviewed open-access encyclopedia, with entries curated by expert scholars.

is the most comprehensive scientific research tool on the web. With over 410 million scientific items indexed at last count, it allows researchers to search for not only journal content but also scientists' homepages, courseware, pre-print server material, patents and institutional repository and website information.

RapidTables.com contains quick reference information and tools.

Basic biology intro to cell structure and function.