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What is Organic Chemistry?
What do you know about Carbon?
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Carbon Compounds (2.3) Organic Chemistry
Carbon has 4 valence electrons
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Macromolecules “giant molecules” Formed by polymerization
Small units (Monomers) join together to form polymers
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Four groups of Organic Cmpds. Found in Living things
1. Carbohydrates - made up of C, H, O 1:2:1 Main source of energy for living things Structural in plants and some animals Glucose broken down, supplies energy Extra sugar stored as complex CHO STARCH starch = polymer sugar molecules = monomers
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Monosaccharides -single sugar molecule -glucose, galactose, fructose Polysaccharides -formed from monosacc. -extra sugar stored in glycogen
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Carbohydrates Starch Glucose
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Lipids Insoluble in water Made mostly from C and H Fats, oils, waxes
Used to store energy Part of biological membranes and waterproof coverings Steroids (chemical messengers, ex. cholesterol) are lipids
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Structure of Lipids Glycerol + fatty acids (fig.2-14)
Saturated-each C in the F.A. is joined to a C by single bond (F.A. contains the max. no. H atoms)
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Unsaturated-at least one C-C double bond in the F.A.
Polyunsaturated-F.A. contains more than one double bond Unsaturated-liquid at room temp. Cooking oils = polyunsaturated
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Nucleic Acids Macromolecules made up of H, O, N, C, P
Polymers assembled from nucleotides (monomers) Nucleotides made of 3 parts: 1. 2. 3.
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Nucleic acids Store and transmit genetic information Two kinds of N.A.
1. RNA (ribose) 2. DNA (deoxyribose)
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The structure of a nucleic acid
Nucleotide Nucleotides Adenine Thymine Cytosine Guanine
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Proteins Macromolecules, contain C, H, O, N
Made up of amino acids *peptide bonds -amino group -carboxyl group -More than 20 different A.A. in nature -the side chain called the R-group is different -Dehydration synthesis vs. hydrolysis
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Functions of Proteins Control rate of reactions
Regulate cell processes Used to form bones, muscles Transport materials into or out of cells Help fight disease Up to 4 levels of organization
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