biology

  • Created by: tvrb24
  • Created on: 16-05-18 14:41
what is a disaccharide?
a molecule made from glucose, bound together in a condensation reaction forming 1-4 glycosidic bonds.
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how do you break a disaccharide?
hydrolysis reactions
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name three types of disaccharides and their constituant parts.
Maltose – formed from two glucose molecules joined by an alpha 1-4 glycosidic bond. Sucrose – formed from glucose and fructose joined by an alpha 1-4 glycosidic bond. Lactose – formed from glucose and galactose joined by an beta 1-4 glycosidic bond.
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what are reducing sugars?
sugars that reduce other compounds to form a precipitate. The colour of the precipitate depends on the concentration of the sugar.
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how do you test for sugars?
Benedict’s reagent If a non-reducing sugar is suspected, add hydrochloric acid into a test tube. place test tube into water bath to perform hydrolysis. neutralise acid with sodium hydrogencarbonate.then add Benedict’s solution.
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what is metabolism?
the total of all of the reactions that take place in organsims
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what is anabolism?
the building up of larger, more complex molecules from smaller, simpler ones with energy
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what is catabolism?
the breaking down of larger, more complex molecules into smaller, simpler ones, releasing energy.
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all living organisms contain...
carbon
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Card 2

Front

how do you break a disaccharide?

Back

hydrolysis reactions

Card 3

Front

name three types of disaccharides and their constituant parts.

Back

Preview of the front of card 3

Card 4

Front

what are reducing sugars?

Back

Preview of the front of card 4

Card 5

Front

how do you test for sugars?

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