Biology has many sub-topics such as natural history and genetics, botany, zoology, physiology, and microbiology. Below are some online reference sources that give broad background to these topcs
Includes:
Prokaryotic Biology and Symbiotic Associations
Prokaryotic Communities and Ecophysiology
Prokaryotic Physiology and Biochemistry
Applied Bacteriology and Biotechnology
Human Microbiology
Actinobacteria
Firmicutes and Tenericutes
Alphaproteobacteria and Betaproteobacteria
Gammaproteobacteria
Deltaproteobacteria and Epsilonproteobacteria
Other Major Lineages of Bacteria and the Archaea
Biology of an individual species including systematics, distribution, fossil history, genetics, anatomy, physiology, behavior, ecology, and conservation.
Includes local plant distributions, a polyclave or computer key to the families, and a plant image database. It is useful for plant systematics, phtyogeography, and rare plant management or natural history.
Organization for scientific researchers and educators in the field of genetics. to advance knowledge in the basic mechanisms of inheritance, from the molecular to the population level.