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17 Cards in this Set
- Front
- Back
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Describe the emulsion test |
Add a sample to ethanol and shake so it dissolves. Add water and mix the contents. White emulsion is formed if the test is positive |
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What kind of bonds join amino acids together |
Peptide bonds |
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What type of reaction would join 2 molecules together |
Condensation reaction |
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Is a triglyceride a polymer |
No, it consists of glycerol and 3 fatty acids |
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What are the properties of a tail in a phospholipid |
Non-polar Repel water Hydrophobic |
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Name 3 disaccharides |
Maltose Sucrose Lactose |
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Describe the emulsion test |
Add a sample to ethanol and shake so it dissolves. Add water and mix the contents. White emulsion is formed if the test is positive |
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What is an unsaturated fatty acid |
It has 1 or more double bonds between Carbon atoms |
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Describe the structure of cellulose |
Long straight chains of beta glucose which are cross linked by hydrogen bonds to form microfibrils. Which provide strength to the structure. Small holes in the structure so its fully permeable. No branching Osmotically inactive Insoluble |
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Sucrose + Water breaks down into which 2 disaccharides |
Glucose + Fructose |
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Maltose + Water breaks down into which 2 disaccharides |
Glucose + Glucose |
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What is a monomer |
Monomers are basic units which can be joined together by condensation reactions i.e amino acid, nucleotide |
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Definition of condensation reactions |
A reaction which joins 2 molecules together with the formation of a chemical bond and involves the elimination of water |
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How many ester bonds exist in a triglyceride and what's their purpose |
3 To join fatty acids to a glycerol |
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Describe the structure of starch |
Helical shape so it takes up less space. Compact store of glucose Branches structure so more points can be hydrolysed to form glucose which is used in respiration to provide energy Insoluble Osmotically inactive Large molecule so it can store lots of glucose |
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What kind of bonds like polysaccharides |
Glycosidic bonds |
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What is a saturated fatty acid |
Have all single bonds between Carbon atoms |
