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10 Cards in this Set
- Front
- Back
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What is the function of vitamins? (1)
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Vitamins are coenzymes and take part in some metabolic reactions.
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Define metabolism (1)
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The sum total of biochemical reactions.
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Describe the differences between starch and glycogen (3)
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Starch consist of long, straight chained amylose that have 1,4 glycosidic bonds (1) and branched amylopectin that have 1,6 linkage. (1) Glycogen is shorter and more branched 1,4 linked glucose. (1)
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Describe a suitable test to identify a non-reducing test (4)
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Add HCl to break disaccharide (1)
Add NaCO3 to neutralise (1) Add benedict's solution (1) Turn from pale blue to orange/red precipitate (1) |
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What are tha main differences between haemoglobin and collagen? (3)
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Haemoglobin has mainly alpha helix structures but collagen has mainly left-handed helix structures. (1)
Haemoglobin contains two alpha chains and two beta chains with a prostethic group (haem group Fe2+) but collagen contains three polypeptides with hydrogen bonds in between. (1) Haemoglobin is globular and water-soluble but collagen is fibrous and insoluble (1) |
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State an example of a competitive inhibitor and a non-competitive inhibitor. (2)
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Competitive enzyme :
Alcohol dehydrogenase (1) Non-competitive enzyme : Potassium Cyanide (1) |
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State the difference between coenzymes and cofactors (1)
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Coenzyme is a type of cofactor and is a non-protein (1)
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Describe the structure of the three types of lipids you have learned (3)
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Triglyceride
One glycerol and three fatty acids (1) Phospholipid One phosphate, one glycerol and two fatty acids (1) Cholestrol Four carbon-based rings (1) |
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Why is starch and glycogen good energy storage molecules? (1)
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Glucose molecules are held in chains and can be easily broken off (1)
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State each monomer and polymer of the following molecules :
Carbohydrates Proteins Lipids (3) |
Carbohydrates
Monosaccharide Polysaccharide (1) Proteins Amino acids Polypeptides (1) Lipids Do not form polypeptides (1) |
