Biological Molecules - Carbohydrates

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Is glucose a monosaccharide?
Yes
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What disaccharide is formed when two glucose molecules are joined in a condensation reaction?
Maltose
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What two monosaccharides form to make lactose?
Glucose + Galactose
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Where is the hydrogen atom on carbon 1 of an alpha glucose molecule?
Above the plane of the molecule
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What is released in a condensation reaction?
A water molecule
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What bond is formed when two monosaccharides join in a condensation reaction?
Glycosidic bond
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What molecule makes up glycogen?
Alpha glucose
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What molecule makes up cellulose?
Beta glucose
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What molecule makes up starch?
Alpha glucose
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Why is starch a good storage molecule?
It is compact and insoluble
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Why is glycogen more readily hydrolysed than starch?
It is more branched
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Are the chains of beta glucose branched or unbranched?
Unbranched
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What gives cellulose its strength?
Hydrogen bonds
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What is the test for reducing sugars?
Benedicts test
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If you get a negative result on the reducing sugars test, what must you do so the test can be used to test for non-reducing sugars?
Acid hydrolysis then neutralise
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What is the test for starch?
Iodine test
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Other cards in this set

Card 2

Front

What disaccharide is formed when two glucose molecules are joined in a condensation reaction?

Back

Maltose

Card 3

Front

What two monosaccharides form to make lactose?

Back

Preview of the front of card 3

Card 4

Front

Where is the hydrogen atom on carbon 1 of an alpha glucose molecule?

Back

Preview of the front of card 4

Card 5

Front

What is released in a condensation reaction?

Back

Preview of the front of card 5
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