Chapter 1 Notes (Fall2010)

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Department
Biological Sciences
Course
BIOA01H3
Professor
Mary Olaveson
Semester
Fall

Description
BIOA01FALL2010 CHAPTER 1 WHAT IS BIOLOGYBiologythe scientific study of living thingsLiving things all the organisms descended from a singlecelled ancestorBiological science was founded with the development of the cell theory and the theory of evolution by natural selectionCharacteristics of living organisms consist of one or more cells Contain genetic information use genetic information to reproduce themselves are genetically related and have evolved can convert molecules from their environment into new biological molecules can extract energy from environment and use it interact with one anotherUnicellular organisms a single cell carries out all the functions of lifeMulticellular organisms more than one cellCell Theory cells are the basic structural and physiological units of all living organisms cells are both distinct entities and building blocks of more complex organisms all cells come from preexisting cells all cells are similar in chemical composition most of the chemical reactions of life occur within cells complete sets of genetic information are replicated and passed on during cell divisionEvolutionliving systems evolve through differential survival and reproductionHumans select for desired traits when breeding animalsDarwin pos
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