B1.5 Lipids Flashcards
1
Q
All lipids contain _ _
A
Fatty acids
2
Q
Fatty acids contain
A
A hydrocarbon chain and a Carboxyl group
3
Q
Saturated Vs unsaturated
A
Saturated - No C=C bonds
Unsaturated - C=C bonds
4
Q
Properties of Triglycerides
A
Large
Non polar
Hydrophobic - Insoluble
5
Q
Properties of Phospholipids
A
Head - Polar, Hydrophilic, Soluble
Tail - Non polar, hydrophobic, insoluble
6
Q
Triglycerides are formed of
A
Condensation reaction between 1 molecule of glycerol and 3 fatty acids
7
Q
Condensation reactions between glycerol and a fatty acid form
A
An ester bond
8
Q
Difference between triglycerides and phospholipid structure
A
Phospholipids replace a fatty acid chain for a phosphate containing group
9
Q
Lipid emulsion test
A
Add sample to dry tube
Add 5cm³ ethanol and H2O
Positive test forms a milky colour
