StudyGuideBIO110

StudyGuideBIO110 - BlO 110 Exam I Study Guide All of the...

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I Study Guide All of the topics listed will appear on the exam. What is homeostasis? All living organisms act to maintain a relatively stable internal environment Homeostasis is the dynamic constancy of the internal environment Homeostasis is essential for life Deductive vs. inductive reasoning Deductive - Using accepted general principles as a “guide” to explain specific observations Inductive - Discovering general principles through examination of specific cases What do the 1st and 2nd laws of thermodynamics say? 1 st Energy cannot be created or destroyed o During each conversion, some energy is lost into the environment as heat energy o The energy of random molecular motion 2 nd - Disorder in closed systems is continuously increasing o “entropy increases” o Entropy is a measure of the disorder of a system Atomic number, atomic mass number, valence shell electrons, octet rule Atomic Number – number of protons Atomic Mass Number – number of protons and neutons Valence Shell Electrons – Chemical behavior depends on the number of electrons in valence shell atoms with the same number and electrons with similar behavior Octet Rule - Atoms gain, lose or share valence electrons in order to end up with 8 valence electrons Covalent, ionic, and hydrogen bonds Covalent – Formed when two atoms share electrons o Strong(when more electrons are attached) o Very Directional(formed between two specific atoms) Ionic – Formed by the attraction of oppositely charged ions o Strong(not as covalent) o Not Directional(Not formed by particular ions in the compound) Hydrogen – Formed by the charges of opposite partial electric charges between two polar molecules o Weak(Not effective over long distances o Highly Directional(Polar Molecules must be close b/c weak attraction to be effective) What type of bond makes a water molecule? Two Covalent Bonds Hydrogen Bond(many physical properties) Definition of energy Energy - the ability to do work o It exists in two states: potential and kinetic What is the range of pH? Acidic and basic pHs
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This note was uploaded on 04/02/2008 for the course BIO 110 taught by Professor N/a during the Fall '08 term at Cal Poly Pomona.

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StudyGuideBIO110 - BlO 110 Exam I Study Guide All of the...

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