Couch, Lee Albuquerque Technical-Vocational Institute, Albuquerque, New Mexico.
Last reviewed:March 2019
Show previous versions
- Links to Primary Literature
- Additional Readings
A natural science concerned with the study of all living organisms. Living organisms, from the viewpoint of biology (biological science), share a number of unifying themes, including their origin from the same basic cellular structure and their molecular basis of inheritance. Still, they are diverse in many other aspects. Because of the diversity of life (see illustration), biological science can be split into many divisions that focus on the various aspects of living organisms. The primary divisions of study in biology consist of zoology (animals), botany (plants), and protistology (one-celled organisms), and are aimed at examining such topics as origins, structure, function, reproduction, growth, development, behavior, and evolution of the different organisms. In addition, biologists consider how living organisms interact with each other and the environment on both an individual basis and a group basis. Therefore, within these divisions are many subdivisions, including molecular and cellular biology, microbiology (the study of microbes, including bacteria and viruses), taxonomy (the classification of organisms into special groups), physiology (the study of function of the organism at any level), immunology (the investigation of the immune system), genetics (the study of inheritance), and ecology and evolution (the study of the interaction of an organism with its environment and how that interaction changes over time). See also: Animal; Animal evolution; Bacteria; Biodiversity; Botany; Cell biology; Ecology; Genetics; Immunology; Microbiology; Molecular biology; Physiological ecology (animal); Physiological ecology (plant); Plant; Plant evolution; Plant physiology; Taxonomy; Virus; Zoology
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 9000 highly qualified scientists and 43 Nobel Prize winners.
MORE THAN 8500 articles and Research Reviews covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information