Ch 5 -1 - Chapter 5 Most macromolecules are polymers built...

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Chapter 5
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Most macromolecules are polymers, built from monomers Three of the classes of life’s organic molecules are polymers Carbohydrates Proteins Nucleic acids
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Synthesis of Polymers Condensation (Dehydration) reactions HO H 1 2 3 HO HO H 1 2 3 4 H H 2 O Short polymer Unlinked monomer Longer polymer Dehydration removes a water molecule, forming a new bond Figure 5.2A Need Enzymes!! Need Energy!!
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Breakdown of polymers Hydrolysis HO 1 2 3 H HO H 1 2 3 4 H 2 O H HO Hydrolysis adds a water molecule, breaking a bond Figure 5.2B
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What we will cover Carbohydrates Types, structures, function Lipids Types, structures, functions Proteins Amino acids, polypeptides, protein structure and function Nucleic acids DNA and RNA
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CARBOHYDRATES
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MONOSACCHARIDES DISACCHARIDES POLYSACCHARIDES
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The structure of glucose – C 6 H 12 O 6 1 2 3 4 5 6 MOLECULAR FORMULA (CH 2 O) n
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Location of carbonyl group Aldoses (e.g., glucose) have an aldehyde group at one end. Ketoses (e.g., fructose) have a keto group, internal. Glucose Fructose
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Heptoses – 7 carbon Hexoses – 6 carbon Pentoses – 5 carbon Trioses – 3 carbon SIZE OF CARBON SKELETON SIZE OF CARBON SKELETON
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Examples of monosaccharides
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Ch 5 -1 - Chapter 5 Most macromolecules are polymers built...

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