Hosted by the Smithsonian National Museum of Natural History this website provides "global access to knowledge about life on Earth."

Online study and learning materials hosted by Khan Academy. Topics covered include structure of a cell, cellular respiration, photosynthesis, cell division, and more.

A portal for "useful and interesting microbiology informational resources".

"The Explorer's Guide to Biology (XBio) is a free resource for students in higher education and self-learners. Departing from traditional textbooks, XBio presents biology as detective work; a bold search for knowledge, and not just its memorization."

The American Institute of Biological Sciences (AIBS) is a nonprofit 501(c)(3) public charitable organization dedicated to the use of science to inform decision making for the benefit of the science and society.

The oldest and largest single life science membership organization in the world with 39,000 members.

FASEB is a federation of scientific societies that advances health and well-being by promoting research and education in biological and biomedical sciences through collaborative advocacy and service to our societies and their members.