1) What is the test to check the presence of a lipid? a) Biuret Test b) Benedicts Test c) Sudan red test d) Iodine Test 2) Which two are correct in a phospholipid? (select two) a) Hydrophobic head group b) Hydrophilic head group c) Hydrophobic fatty acids d) Hydrophilic fatty acids 3) How many fatty acids are there in a phospholipid? a) 1 b) 2 c) 3 d) 4 4) What molecule are the fatty acids connected to? a) Protein b) Glucose c) Cellulose d) Glycerol 5) What are the fatty acids made out of? a) Amino Acid b) Short Hydrocarbon Chain c) Long Hydrocarbon (CH) Chain 6) True or False? Unsaturated fatty acids have double bonds between carbon atoms where the hydrogens are missing. a) True b) False 7) True or False? In a phospholipid bilayer the fatty acid tails point out a) True b) False 8) In the test for lipids a positive result is shown by... a) A blue/black colour b) A brick-red colour c) Red blobs/red layer d) A lilac/purple colour 9) The ratio of hydrogen to oxygen atoms on a lipid is... a) 2:1 b) 3:1 c) 4:1 d) lots:few 10) Which substance would leave a translucent spot on brown paper? choose all that are correct a) banana b) fried donut c) peanuts d) lemon juice

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