Which statement accurately describes lecithin?
A) It is the best-known sterol.
B) It is similar to triglycerides, but contains four fatty acids.
C) Each attachment site is occupied by a phosphate group and a molecule of choline.
D) It is soluble in fat, but not in water.
E) It is used as an emulsifier by the food industry.

Question

Which statement accurately describes lecithin? 
A) It is the best-known sterol. 
B) It is similar to triglycerides, but contains four fatty acids. 
C) Each attachment site is occupied by a phosphate group and a molecule of choline. 
D) It is soluble in fat, but not in water. 
E) It is used as an emulsifier by the food industry.

Quizplus · Accepted Answer

Lecithin is used as an emulsifier by the food industry to stabilize mixtures of ingredients that would otherwise separate. It is often added to foods such as mayonnaise, chocolate, and baked goods.

Answer: D
 Lecithin is a phospholipid that is soluble in fat, but not in water. This property makes it useful in many industrial applications, including food production, cosmetics, and pharmaceuticals.

Option C is partly correct as lecithin does contain a phosphate group and choline, but it does not specify that all attachment sites are occupied by these molecules. Option B is incorrect as lecithin typically contains two fatty acids, not four. Option A is incorrect as lecithin is not a sterol.

Which Statement Accurately Describes Lecithin