Biology 1406 Exam 1: Chapters 1-4.1 Already Passed

Biology scientific study of organisms, living and fossil Common Features all life forms share - Made of a common set of chemical compounds - Made up of cells - Extract energy from the environment and use it to do work - Contain genetic info that enables them to develop, function, and reproduce - Use a universal genetic code to build proteins - Regulate their internal environments - Exist in populations that evolve over time Evolution Major unifying principle of biology and results in change in the genetic makeup over time Charles Darwin proposed that all organisms are descended from a common ancestor and the idea of natural selectionNatural Selection A natural process resulting in the evolution of organisms best adapted to the environment Phylogenetic Tree Illustrates the evolutionary histories of different groups of organisms Multiple Amino Acids Linked Together Form A ______________ Polypeptide Chain All life is made up of the common set of chemical compounds: Carbs, Lipids, Proteins, Nucleic Acids All life extracts _______ from the environment and uses it to do work