Lipids Flashcards
1
Q
What is a triglyceride
A
One glycerol and three fatty acids
2
Q
Fatty acids are hydrophobic. What does hydrophobic mean
A
Fatty acids repels water
3
Q
What does saturated mean
A
It has no double bonds
4
Q
What does unsaturated mean
A
It contains double bonds
5
Q
What is a phospholipid
A
A phosphate group, glycerol and 2 fatty acids
6
Q
The phosphate group is hydrophilic. What does hydrophilic mean
A
The phosphate group attracts water
7
Q
How are triglycerides formed
A
A condensation reaction between a glycerol molecule and three fatty acids
8
Q
What bond is formed with a condensation reaction between a glycerol and three molecules of a fatty acid
A
Ester bond
9
Q
What are triglycerides used for
A
Energy storage molecules
10
Q
What are phospolipids used for
A
Bilayer of cell membranes
11
Q
How do you test for lipids
A
- add ethanol
- shake for 1 minute
- pour in water
- if milky emulsion is observed, lipids are present
