Why are Steroids are Considered to Be Lipids

Question

Why are steroids are considered to be lipids?
A)Because steroids are essential components of cell membranes.
B)Because steroids are not soluble in water.
C)Because steroids are made of fatty acids.
D)Because steroids contribute to atherosclerosis.
E)Because steroids are hydrophilic.

Accepted Answer

Steroids are considered to be lipids because they are not soluble in water. Lipids are a diverse group of substances that are insoluble in water but soluble in nonpolar solvents such as chloroform, benzene, or ether. Steroids share this characteristic with other lipids such as fats, oils, and waxes. However, steroids are not made of fatty acids and they do not contribute to atherosclerosis. While some steroids, such as cholesterol, are essential components of cell membranes, this is not the primary reason why they are considered lipids. Steroids are also not hydrophilic, as they do not have a tendency to interact with water.