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12 Cards in this Set
- Front
- Back
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Name three disaccharides and the monosaccharides they’re made from |
Sucrose = glucose and fructose Lactose = glucose and galactose Maltose = glucose and glucose |
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What is the reaction between two monosaccharides and what’s the products and bond? |
Condensation reaction Disaccharide and water Glycosidic bond |
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What are the properties of starch? |
Long chains of alpha glucose Found in plants Used for energy storage Insoluble Coiled, compact |
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What are the products of glycogen? |
Chains of alpha glucose Found in animal bacteria Used for storing carbohydrates Insoluble Branched |
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What are the properties of cellulose? |
Made of beta glucose Long straight and unbranched Many hydrogen cross link bonds Rigidity in cell walls of plants Microfibrills |
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What is hydrolysis? |
Breaking down with water |
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What is the chemical formula for any disaccharide? |
C12H22O11 |
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What are isomers? |
Elements with the same chemical formula but a different molecular arrangement Beta glucose is an isomer of alpha glucose |
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What is a semi qualitative Benedicts test? |
Mix sugar substance with benedicts solution Place in water bath at 90• for 5 minutes If sugar present, mixture will turn a brick red |
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What is the qualitative sugar test? |
Mix substance with benedicts solution and put it through a colorimeter Plot on a graph and compare to a known sugar concentration
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What’s the test for a non reducing sugar? |
Add benedicts reagent Add hydrochloric acid Put in 90• water bath for 5 minutes Remove from bath and add same amount of sodium hydrogen carbonate Add benedicts reagent and place in water bath again Should turn brick red |
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Why do we add acid in the test for non reducing sugars? |
To break down the non reducing disaccharide to the reducing monosaccharides. Leaving it in the water bath gives time |
