Biology

From Memory Alpha, the free Star Trek reference.

Biology, sometimes referred to as bioscience or the life sciences, is the scientific study of living organisms (or lifeforms) and their vital processes. Individuals who study biology are referred to as biologists. The study of alien lifeforms is called exobiology.

Charles Tucker III had a Vulcan scientist named Mister Velik as his 10th grade biology teacher, who came to teach us about life on other worlds. Tucker later recalled that Velik used to often say, "challenge you preconceptions or they'll challenge you." (ENT: "Strange New World") Tucker later took an his honors biology course, where he recalled learning that a individuals hair and nails keep growing for quite a while after one dies. (ENT: "Shuttlepod One")