Lipids Flashcards
List five functions of lipids
Insulation, cell membranes, energy source and storage, protection of organs, some hormones
What elements do lipids contain?
Carbon, hydrogen and oxygen (plus phosphorus in phospholipids)
Triglycerides are made of
Glycerol and three fatty acids
Phospholipids are made of
Glycerol, two fatty acids and a phosphate group
What is the difference between saturated and unsaturated fatty acids?
Saturated only contain single carbon-carbon bonds. Unsaturated contain double carbon-carbon bonds.
What bond is formed by a condensation reaction in lipids?
Ester
Which parts of a phospholipid are hydrophilic and hydrophobic?
The phosphate and glycerol and hydrophilic, the fatty acids hydrophobic (nonpolar)
A high intake of saturated fat raises production of … in the … which can cause plaques called…
A high intake of saturated fat raises production of low density lipoprotein cholesterol in the liver which can cause plaques called atheromas
What type of reaction would split up a triglyceride into fatty acids and glycerol?
Hydrolysis
Which type of fatty acids tend to be solid at room temperature?
Saturated fatty acids
Which type of fatty acids tend to be liquid at room temperature?
Saturated fatty acids
Where are phospholipids found?
In cell membranes
