1) What are triglycerides made of? a) 2 phosphates, 3 fatty acids, 1 glycerol b) 3 fatty acids, 1 phosphate c) 1 fatty acid, 3 glycerol d) 1 glycerol, 2 fatty acids, phosphate e) 1 glycerol, 3 fatty acids f) 1 glycerol, 2 fatty acids 2) What bond connects the glycerol to the fatty acids? a) Hydrogen b) Phosphate c) Ester d) Glycosidic e) Ionic f) Phosphodiester 3) What do unsaturated fatty acids have that saturated fatty acids dont? a) A carbon to carbon double bond b) A carbon to carbon ionic bond c) Hydrogen to carbon double bond d) Carbon to carbon hydrogen bond e) Nothing 4) What are phospholipids made of? a) 1glycerol, 1 fatty acid, 1 phosphate b) 1 glycerol,2 fatty acids c) 1 phosphate, 2 fatty acid, 1 R group d) 1 phosphate, 4 fatty acids, 1 glycerol e) 1 phosphate, 1 glycerol, 2 fatty acids f) 1 glycerol, 3 fatty acids 5) Are phospholipids hydrophobic, hydrophilic or both? a) Both b) Hydrophilic c) Hydrophobic 6) Are triglycerides hydrophobic, hydrophilic or both? a) Both b) Hydrophilic c) Hydrophobic 7) What state are saturated fatty acids at room temperature? a) Liquid b) Solid c) Gas 8) What state are unsaturated fatty acids at room temperature? a) Liquid b) Solid c) Gas 9) What is the test for lipids? a) Iodine test b) Benedict’s test c) Biurets test d) Emulsion test 10) Which do you add first in the emulsion test? a) Water b) Ethanol 11) What do phospholipids form in water? a) Nothing b) A trilayer c) A dilayer d) A bilayer 12) Is the tail on a phospholipid hydrophobic or hydrophilic? a) Hydrophobic b) Hydrophilic 13) What colour shows a positive result in the lipids test a) Orange b) Blue/black c) Red d) Cloudy e) Lilac f) White emulsion 14) Are triglycerides polymers? a) Yes b) No 15) What reaction forms triglycerides a) Hydrolysis b) Condensation

Lipids

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