lipids Flashcards
1
Q
What is the structure of a triglyceride?
A
one molecule of glycerol
three fatty acids
ester bonds between each fatty acid and glycerol
2
Q
What is the function of triglycerides?
A
used as energy storage
tails contain lots of chemical energy
insoluble in water
3
Q
What is the structure of phospholipids?
A
one molecule of glycerol
2 fatty acids
one phosphate group
heads are hydrophobic
tails are hydrophilic
water soluble substances can’t pass through easily
4
Q
what is a saturated fatty acid?
A
no double bonds
5
Q
what is an unsaturated fatty acid?
A
double bonds between some of the carbons
6
Q
what is the emulsion test for lipids?
A
shake the sample with ethanol
pour into water
milky emulsion = lipid present
