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LAB 1 - Macromolecules

LAB 1 - Macromolecules - Lab 1 Macromolecules 4 classes of...

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4 classes of large biological molecules: Carbohydrates monosaccharides Proteins amino acids Lipids fatty acids Nucleic acids nucleotides (MACROMOLECULES) (MONOMERS) or POLYMERS Structural (e.g. cellulose) or functional (e.g. enzymes) Lab 1. Macromolecules
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1. Carbohydrates C, H and O MONO SACCHARIDES (simple sugars) glucose, fructose, galactose, ribose DI SACCHARIDES sucrose(glucose, fructose) lactose (glucose+galactose) maltose (two glucose) POLY SACCHARIDES (complex sugars) starch, cellulose, glycogen glucose
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Benedict’s test results - + +++ ++ Activity A: Mono- and Disaccharides Exception : sucrose negative result (blue)
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Starch – a plant polysaccharide; a polymer of glucose with α(1→4) glycosidic bond starch maltose glucose dark blue purplish blue yellow Iodine test (I 2 KI reagent): + : yellow turns into dark blue = starch present - : no color change = no starch/ starch broken down into glucose Activity B: Starch
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HYDROLYSIS – a chemical reaction used to break down
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