From the Biology Project to the Biology Corner and the Library of Congress, the VLRC offers a set of 30 links to first-class biology sites.

Database summarising the results from aquatic acute toxicity tests conducted by the US Geological Survey, as a starting point for hazard assessment of contaminants. The database is searchable by species or chemical, or a combination of the two. Also includes two datasets - of chemical IDs and

Journal dedicated to the dissemination of research dealing with the tropical and subtropical waters of the world's oceans. All aspects of marine biology are treated, and papers in the physical, chemical and geological sciences are also published if pertinent to marine biology.

The American Institute of Biological Sciences offers this career e xploration site for the biological sciences.Here you can discover what biologists do, how to prepare for a career in biology, which are the best college and university biology programs, and the future job outlook for biologists.

This site uses film and computer-enhanced images of living cells and organisms to illustrate basic concepts in cellular biology, microbiology, immunology, and microscopy. Animated sequences demonstrate mitosis and the cell cycle, and "cell cams" show real-time changes in cancer cells and bacteria.

Religioustolerance.org presents an even-handed discussion of this topic, including beliefs about the origins & development of the species, the Earth, & the rest of the universe, naturalistic evolution, young Earth creationism, old Earth creationism, theistic creationism, and intelligent design.

An online general biology textbook maintained by Dr. John Kimball

From an online general biology text maintained by Dr. John Kimball, this webpage describes the structure of chromosomes, karyotypes, diploid numbers, and translocation.

From an online general biology text maintained by Dr. John Kimball, this webpage describes the events occurring during each stage of meiosis and the mechanisms of genetic recombination.

From an online general biology text maintained by Dr. John Kimball, this webpage describes the events occurring during the five stages of mitosis and cytokinesis.

From an online general biology text maintained by Dr. John Kimball, this webpage describes the signals for normal mitosis and how abnormal signaling causes uncontrolled mitosis.

From an online general biology text maintained by Dr. John Kimball, this webpage describes the steps in the cell cycle and how the cell cycle is controlled.

NetBiochem: Cell Membranes
This site from NetBiochem presents an overview of cell membranes, including chemical components, membrane structure, membrane receptors, and cell-cell communication.

The On-Line Biology Book includes transport in and out of cells, cell division, mitosis, meiosis, atp and biological energy, cellular metabolism, flowering plant reproduction, plant hormones and nutrition, animal cells and tissues , various systems of the body and so much more.

This illustrated tutorial, from a series of general biology lecture notes, describes the basic principles of photosynthesis, including pigments, chloroplast structure, reactions occurring during photosynthesis, and the C4 pathway.

This webpage contains problem sets, tutorials, activities, and Internet resources on cell biology.

The Cell: An Image Library™ is an easy-to-search, public repository of reviewed and annotated images, videos, and animations of cells from a variety of organisms, showcasing cell architecture, intracellular functionalities, and both normal and abnormal processes.

This webpage provides links to various topics in biology on the Internet, including biochemistry, molecular biology, cell biology, botany, and parasitology .