Bio200chapter4

Bio200chapter4 - Chapter 4: Molecules of Life 4.1 Polymers...

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Chapter 4: Molecules of Life 4.1 Polymers Are Built of Monomers Organic molecules - formed by living organisms . o Contain carbon and hydrogen . : May contain other atoms : confer specific chemical properties building materials of body = macromolecules . o can be very large o four types of macromolecules: Proteins Nucleic Acids Carbohydrates Lipids o macromolecules assembled from many small subunits called monomers . : chain of monomers = polymer . All polymers assembled same way o Dehydration synthesis : -OH and –H removed ==> H 2 O formed Disassembled in reverse process o Hydrolosis ==> water added 4.2 Proteins Proteins – molecules containing C , H , O , and N . o polymers of amino acids . o covalent bond between amino acids = peptide bond o polymer = polypeptide . Table 4.2 The many functions of proteins Amino acids share basic structure o C atom with three groups added : an amino group (-NH 2 ) : a carboxyl group (-COOH) : a functional group (R) –Variable group functional group gives AAs chemical identity o 20 different types of AA Protein structure is complex o order of Amino Acids in polypeptide is important : sequence of AAs affects how protein
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This note was uploaded on 04/07/2008 for the course BI 200 taught by Professor Price during the Spring '08 term at CSU Long Beach.

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Bio200chapter4 - Chapter 4: Molecules of Life 4.1 Polymers...

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