Harvard Dept of MCB - Biology Links
Harvard University (U.S.A) Department of Molecular and Cellular Biology, providing comprehensive reference pages to various online sources of information in the biological sciences.
http://www.mcb.harvard.edu/BioLinks.html

Kimball's Biology Pages
Comprehensive selection of references available on the one site, including dictionary and related articles all intending to improve awareness and understanding of Biology online.
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/W/Welcome.html

Biology, Agriculture and Horticulture
Provides the largest up-to-date online searchable information about biology, agriculture and horticulture on the Internet.
http://trophort.com

Biology Terms Look Up
Free combined look up on comprehensive Biology related dictionaries and glossaries dealing with a vast range of topics: Ecology, Paleontology, Genetics, Climate Change, etc.
http://www.babylon.com/define/18/Biology-Terms.html

Cosmetic Dentist London
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http://www.sparkledental.co.uk

BiologySAP | AP Biology Notes
A reference for all AP biology students. The site offers notes, animations, tests/quizzes to better understand the concepts of biology. The site parallels with the Campbell Reece Biology Textbook.
http://www.biologysap.com

Life and Earth Sciences Social Network
A social network for exchanging information between life and earth scientists and the wider community.
http://bio-network.org/

AS and A2 Level Biology Revision : Biology-Innovation.co.uk
The best place for AS or A2 level biology revision. Full of features, diagrams and information covering human biology, biochemistry and plant biology. Contains easy to understand, printable, notes on many subjects.
http://www.biology-innovation.co.uk