Polysaccharides. AS Biology OCR

Questions on polysaccharides

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What are the properties of polysaccharides?
They are macromolecules, not sweet, not soluble in water and can't be crystallized.
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They're polymers of....?
Monosaccharides
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Joined by?
Condensation reactions
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Broken down by?
Hydrolysis reactions
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Starch is a polymer of ...?
alpha-glucose
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Starch is a mixture of?
Amylose & Amylopectin
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What is the function of starch?
Energy storage in plants
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Starch is found in...?
Amyloplasts & as starch grains in stroma of chloroplasts
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Amylose consists of....?
Unbranched chains of alpha-glucose
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Usually made out of ____ monomers
300
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Forms a _____________ as chains coil up
Helical shape
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What bonds form between -OH groups to stabilize the helix?
Hydrogen bonds
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This makes Amylose _________.
Compact
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Amylopectin is made of....?
Branched chains of alpha-glucose
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Glycogen is a polymer of...?
Alpha-glucose
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It is?
Branched
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What is the function of glycogen?
Energy storage in animals
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Glycogen is especially found in ?
Option 1 & 2
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Cellulose contains ___________ chains of ___________.
Unbranched chains, beta-glucose
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Joined by?
1,4 Glycosidic bonds
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The individual chains are then linked to each other by ____________.
Hydrogen bonds
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These are formed into STRONG ____________.
Microfibrils
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What is the function of cellulose?
Structural polysaccharide in plants
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Other cards in this set

Card 2

Front

They're polymers of....?

Back

Monosaccharides

Card 3

Front

Joined by?

Back

Preview of the front of card 3

Card 4

Front

Broken down by?

Back

Preview of the front of card 4

Card 5

Front

Starch is a polymer of ...?

Back

Preview of the front of card 5
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Comments

Sophie-Golda

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Amylose forms a long spiral not a helix :s

Sophie

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A good quiz but the first answer of Q17 is missing - it just says "It"

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