Lipids exam qs

Question 1

Describe how an ester bond is formed in a phospholipid molecule.

Answer 1

Condensation (reaction)
OR
Loss of water;
Between of glycerol and fatty acid;

Question 2

The scientists expressed their results as Percentage of lipid in plasma
membrane by mass. Explain how they would find these values.

Answer 2

Divide mass of each lipid by total mass of all lipids (in that type
of cell);
2. Multiply answer by 100.

Question 3

Fatty acids are Used to make plasma membranes and Respired for energy Converted to other fatty acids
Use the information to explain two ways in which fatty acids are important in
the formation of new cells.

Answer 3

Fatty acids used to make phospholipids;
Phospholipids in membranes;
More phospholipids more membranes made;

Fatty acids respired to release energy;
More triglycerides more energy released;
Energy used for cell production / production of named cell component;