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Chapter 1 and 2 notes

by: Alyson Notetaker

Chapter 1 and 2 notes BIO 140 - 005

Alyson Notetaker

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Cell & Molecular Biology
Matthew Pritchett

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About this Document

Covers the chemistry of life and the evolution, the themes of biology and scientific inquiry
Cell & Molecular Biology
Matthew Pritchett
Class Notes




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This 0 page Class Notes was uploaded by Alyson Notetaker on Thursday January 21, 2016. The Class Notes belongs to BIO 140 - 005 at The University of Tennessee - Martin taught by Matthew Pritchett in Fall 2016. Since its upload, it has received 20 views. For similar materials see Cell & Molecular Biology in Biology at The University of Tennessee - Martin.


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Date Created: 01/21/16
Chapter 1 Evolution the Themes of Biology and Scienti c Inquiry Biology is a search for ideas and observations that unify the incredible diversity of life A Properties of Life a Order organization gt connecting things together b Metabolism gt chemical reactions energy 1 breaking down 2 building up Evolutionary adaptation gt long term change evolutionary Regulatory control Growth amp development Response to the environment Reproduction gt all division B Levels of Biological Organization a Atoms smallest unit b Molecules a cluster of atoms c Organelles part of the cell d Cells C Scienti c Method amp Experimental Design not always applied in the proper way a Make an observation gt Why b Ask a question gt consult prior knowledge c Formulate a hypothesis a quotguessstatement of explanationquot d Make predictions quotyes noquot type statement e Collect and interpret data gt consult prior knowledge i Comparing results with someone information f Draw conclusions gt support 1 proof is not a scienti c word because it means your 100 sure about it while science is never 100 proven 2 science is falsi able but it is testable a draw conclusion is support or reject 3 make sure your actually testing your hypothesis n LO hbel D Important Terms a Hypothesis tentative explanation amp statement not a question looks at one particular problem b Theory wellsubstained explanation to explain and predict of an unobserved phenomena i Can be use as a predictive tool 1 A law is one step beyond a theory E Famous Theories a Cell theory b Big Bang Theory why the universe is here c Germ theory of disease caused evolution of medicine Evolution ex Medicine Valence bond theory how molecules interact and forms Theory of general activity ex Gravity Plate tectonics earth is made of rocks that oat LP hbel Chapter 2 The Chemistry of Life 1 Elements and compounds 2 Atomic structure 3 Chemical bonding 4 Chemical reactions Elements and Compounds a Essential elements macronutrients comprise 999 of organisms i Elements are made of atoms 1 Carbon 2 Oxygen 3 Hydrogen 4 Nitrogen 5 Sulfur 6 Phosphorus ii These are also called essential elements or macronutrients iii Carbon Oxygen Hydrogen and Nitrogen are the most important b Trace elements micronutrients are needed in minute small quantities 1 Boron 2 Zinc 3 Copper ii These are called trace elements or also called micronutrients iii There are more than 3 of trace elements Atomic structure amp Composition c Atoms contain three subatomic particles i Protons positively charged ii Neutrons no charge iii Electrons negatively charged d Protons and Neutrons are found in the nucleus while electrons are found outside Elements a atomic number number of protons b atomic mass of protons of neutrons i electrons are very small and contribute little to mass c the number of protons and electrons in an atom are equal meaning elements start as uncharged i elements become charged when the election numbers changes Protons and Neutrons a b each element has a different atomic number a no two elements have the same number of protons neutron number varies but is usually equal to the proton number or slightly higher isotopes are versions of the same element a they have the same atomic number but their atomic mass differs b some isotopes are radioactive gives off energy


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