1.3 Lipids

Question 1

What are triglycerides?

Answer 1

A molecule formed by the condensation of 1 Glycerol and 3 Fatty Acids

Question 2

What are phospholipids?

Answer 2

A molecule formed by the condensation of 1 Glycerol and 2 Fatty Acids and 1 Phosphate. The phosphate makes this molecule polar.

Question 3

What is the bond in a triglyceride?

Answer 3

The bond between the glycerol and fatty acid is an esther bond -o-

Question 4

What is a saturated fatty acid?

Answer 4

A fatty acid where the chain has no double bonds. It is solid at room temperature.

Question 5

What is an unsaturated fatty acid?

Answer 5

A fatty acid where the chain has a double bond causing a kink in the chain. This lowers the melting point so it is liquid at room temperature

Question 6

What are the uses of phospholipids?

Answer 6

They form bilayer cell membranes forming hair pin shapes in rows due to polar nature of the molecule