BIO 202 Lecture Notes - Lecture 1: Atomic Number, Electron Configuration, Morphine

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To understand the molecular basis of all living aspects of biological diversity. Four different atoms hydrogen, carbon, nitrogen, and oxygen make up 96% of the matter found in organisms. The arrangement of these atoms into the tens of thousands of molecules in organisms and the rules that govern their arrangement, are the central objectives of these lectures. Keep in mind that before you can appreciate the symphony you must understand the notes and hear the melody. Anything that has mass and takes up space. Mass is constant, whereas weight is a function of gravity. Everything on earth, whether living or not is made up of matter. Matter consists of chemical elements in pure form, and in combinations called molecules and compounds. Element: pure substance made up of one kind of atom. An atom cannot be broken down into simpler substances by chemical means. The word atom is derived from the greek word atomos, which means indivisible (uncuttable)