UGA BIOL 1107 - Exam 1 Study Guide (37 pages)

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Exam 1 Study Guide

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Exam 1 Study Guide


This study guide includes material from the class notes, HW and textbook. The 1st test, which will be on Sep. 15, will cover everything from molecules (Ch 2) to cell membrane (Ch 7). If you haven't been able to keep up with the reading, this guide is perfect because it provides concise, yet detailed, explanations regarding all the topics you need to know.

Study Guide
University of Georgia
Biol 1107 - Principles of Bio I
Documents in this Packet

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BIOL 1107 1nd Edition Exam 1 Study Guide Lectures 1 10 Each section below includes material from the lecture homework and textbook Lecture 1 August 20 Chapter 2 The Chemical Context of Life Molecular Interactions ionic hydrogen bonding covalent van der Waals London dispersion Ionic the attraction between cations and anions which have opposite charges Two atoms are so unequal in their attraction for valence electrons that the more electronegative atom strips an electron completely away from its partner A charged atom or molecule is called an ion Example The electron transfer between two atoms moves one unit of negative charge from sodium to chloride Therefore sodium now 11 protons and 10 electrons has a net electrical charge of 1 Positive charge cation mnemonic CAT PAWsitive Negative charge anion Compounds formed by ionic bonds are called ionic compounds or salts Hydrogen bond noncovalent attraction between a hydrogen and an electronegative atom In living cells electronegative partners are usually oxygen and nitrogen atoms Hydrogen bonds b n water molecules allow some insects to walk on water Covalent sharing of a pair of valence electrons by two atoms One of the strongest bonds Two or more atoms held together by covalent bonds constitute a molecule Van der Waals London dispersion weak bonds that occur only when atoms and molecules are very close together These bonds are responsible for the ability of a gecko lizard to walk up a wall Van der Waals interactions hydrogen bonds ionic bonds weaker bonds Lecture 2 August 22 Chapter 4 Carbon and the Molecule Diversity of Life Carbon forms backbone of proteins lipids and sugars in body Enters biosphere through the action of plants which use solar energy to transform atmospheric carbon dioxide into the molecules of life These molecules are passed along to animals that feed on plants Organic chemistry study of carbon compounds Forms lots of diverse structures including long chains branched rings complex rings Rings glucose

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