Lipids

Question 1

Triglyceride - structure

Answer 1

One molecule of glycerol

3 molecules of fatty acids

Question 2

Where do ester bonds form on a triglyceride?

Answer 2

Between the glycerol and fatty acid chains.

Question 3

How many water molecules are released when a triglyceride is formed?

Answer 3

3

Question 4

Are fatty acids saturated,unsaturated or both?

Answer 4

Both

Question 5

Where is chemical energy stored in a fatty acid?

Answer 5

The hydrocarbon Tails

Question 6

True or false - Does carbohydrates contain more energy than lipids do?

Answer 6

False

Question 7

True or False - Triglycerides repel water.

Answer 7

True as a result of their hydrophilic head.

Question 8

Phospholipid - Structure

Answer 8

Two hydrophobic fatty acid tails.

A hydrophilic head consisting of a phosphate group and glycerol.

Question 9

Hydrophobic

Answer 9

Cannot interact with water.

Question 10

True or False - Triglycerides are soluble.

Answer 10

False - They are insoluble therefore they don’t affect the water potential of the cell.