Question

Which of the following is NOT TRUE of lipids?

a. A function of lipids is protection against shocks/blows.
b. Most lipids are hydrophilic in that they dissolve in water.
c. A function of lipids is insulation against heat loss to the environment.
d. Lipids are the second source of raw fuel for generating ATP.
e. A function of lipids is as an energy source.

Answer 1

Statement b about lipids being hydrophilic and dissolving in water is not true; lipids are hydrophobic and insoluble in water.

Step-by-step explanation:

When considering the properties of lipids, statement b, "Most lipids are hydrophilic in that they dissolve in water" is NOT TRUE. Lipids are composed of hydrocarbons and tend to be hydrophobic ("water-fearing"), meaning that they are insoluble in water. Lipids have various functions including long-term energy storage, insulation against heat loss, and forming protective barriers over skin or feathers in animals, contributing to their buoyancy and dryness. They are also an important component of cellular membranes and act as precursors for hormone synthesis.