Biology 

• actionbioscience.org
  Peer-reviewed articles about bioscience and biotechnology.
• Anthropology Tutorials
  Look under the "Biological Anthropology Topics" section for tutorials and links about evolution, genetics, primates, humans, and classification.
• AP Biology
  "We have selected relevant material from MIT's introductory courses to support students as they study and educators as they teach the AP® Biology curriculum." From MIT OpenCourseware.
• AP Biology On-line Syllabus
  Lecture notes and links to sites dealing with AP Bio topics.
• ARKive: Images of Life on Earth
  "ARKive is the Noah's Ark for the Internet era - a unique global initiative, gathering together into one centralised digital library, films, photographs and audio recordings of the world’s species."
• BioEd Online
  "BioEd Online utilizes state-of-the-art technology to give you instant access to reliable, cutting-edge information and educational tools for biology and related subjects."
• BioImages Homepage
  From Vanderbilt University, a site designed "to provide educational information to the public on biologically related topics, as well as a source of biological images for personal and non-commercial use."
• Biology Flexbooks
  "Biology I is a complete educational tool for the high school student covering cell biology, genetics, evolution, ecology, and physiology." The series contains 5 volumes in total.
• Biology in Motion
  "Here you will find animations, interactive activities, and cartoons designed to make learning biology a richer, more engaging experience." From a professor of biology.
• Biology of B-Movie Monsters
  Uses B-Movie monsters as examples to explain how physical and biological systems really work.
• Biology Online
  Biology dictionary, tutorials, and links to other biology sites online.
• The Biology Project
  "An online interactive resource for learning biology" from Arizona State University, with lots of useful information.
• Biology Questions and Answers
  "This site was specially written and organized to make Biology learning easier. More than 1800 questions and answers are available here to help you study Biology in the easiest way possible."
• BioWorksU
  "BioWorksU is a virtual environment where you can learn about exciting careers in biotechnology and health care."
• BioZone: Bio Links
  Great set of links to sites about biology topics. Arranged by topic.
• Cell Biology Animation
  Sections from a CD available for use from the web only.
• Cells Alive!
  Covers cell structure, microbes, the immune system, and microscopy, and includes videos of microbes and cells.
• Chemistry and Biology Pictures
  "This photo gallery is designed to assist those who need high quality science pictures for lectures, demonstrations, and other projects."
• Dissections  Anatomically Correct: Online Cat Dissection Dissections Research Guide Froguts.com NetFrog Virtual Embryo Virtual Cat Dissection Virtual Fetal Pig Dissection Virtual Pig Dissection Virtual Frog Dissection Kit zeroBio: Dissection Lab
• DNA from the Beginning
  "An animated primer on the basics of DNA, genes, and heredity."
• DNA Interactive
  Flash site with a timeline, information about the genetic code, genetic manipulation, uses of genetic science, and history of genetics.
• Droplet - Amateur Microscopy of the Protozoa
  Over 180 pictures covering over 50 genera of protozoa. Each item includes full taxonomy and brief descriptions of the protozoan shown.
• eNature
  Information on nature and wildlife "from the creators of the Audubon Field Guides".
• Encyclopedia of Life
  "Comprehensive, collaborative, ever-growing, and personalized, the Encyclopedia of Life is an ecosystem of websites that makes all key information about life on Earth accessible to anyone, anywhere in the world." Under Construction.
• EverythingBio: Image Database
  Search-based access to biology-related images.
• GardenWeb Glossary of Botanical Terms
  Botany, gardening, horticulture and landscape architecture terms are available for searching or browsing.
• GBIF: Global Biodiversity Information Facility
  "The Global Biodiversity Information Facility (GBIF) is an international non-profit organisation to provide free and universal access to data regarding the world's biodiversity."
• The Life of Birds
  A PBS tie-in all about birds, from their origins to their lives, their intelligence, and their songs.
• Microbes.info
  Tons of annotated links to selected sites relating to various topics in microbiology.
• National Marine Sanctuaries Media Library
  "An online vault where a comprehensive collection of select video clips and high-resolution still images from America's underwater treasures" is available.
• National Science Foundation: Biology
  "A bat, a mushroom, a blade of grass--they're easy to identify as "life." But what about a cold virus or mold? Biologists are life's detectives, discovering what “alive” really means."
• Nature: Alien Empire
  Companion website to the PBS show about insects.
• NOAA Ocean Explorer
  Explore the variety of life in the world's oceans.
• Plants in Motion
  "Time-lapse photography is a simple technique that allows us to see the movements of plants and clearly demonstrates that plants are living and capable of some extraordinary things."
• Public Library of Science: Biology
  "PLoS Biology is a peer-reviewed, open-access journal published by the Public Library of Science (PLoS), a non-profit organization committed to making scientific and medical literature a public resource."
• A Tour of the Cell
  An animated introduction to cell biology.

Science Index Page