BIO 101 1st EditionLecture 1Outline of Current LectureI. Structural Levels of LifeII. Emergent PropertiesIII. Cell TheoryIV. Heritable InformationV. Structure and FunctionVI. Unity in DiversityChapter 1Biology= the study of lifeUnifying themes in biology- help to organize all of the information, helps to remember it and to think about it1. Life is organized on many structural levels- start at the simplest level increasing complexityAtoms molecules macromolecules cell structure cells tissues organs organisms populations communities ecosystem2. Emergent properties- as you move up in complexity, new properties emerge3. Cellular basis of life- cell theory- 2 partsa. all living things are made of cellsb. all cells come from other cells4. Heritable informationa. DNA is the genetic information in cellsb. The information in DNA flows in 2 waysi. Parent offsprings it is DNA that moves from parent to offspringii. DNA RNA proteinsDNA has the code for how to make proteins. It is the proteins that determine what an organism is and what it can do.The study of how DNA is passed to offspring is called genetics. 5. Correlation of structure and function- what a molecule looks like determines what it can do6. Unity in diversity- 1.5 million species identified, estimated 30 million species exist Hugo DiversityYet, all living things share certain traits:Ex: genetic code- same in all living thingsGlycolysis- series of chemical reactions that uses food to produce readily useable energyTheory of Evolution- greatest unifying theme in biology, explains both diversity and unity in lifeBIO 101 1st EditionUnity- because all living things today connected because they came from a common ancestor in the ancient pastDiversity- because living things have changed (changed means evolve) to fit a particular
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