Final answer:
Steroids are lipids with a multiple ring structure, such as cholesterol. They are hydrophobic and insoluble in water. Steroids have four linked carbon rings and may have an -OH functional group, classifying them as alcohols.
Step-by-step explanation:
Steroids are lipids that have a multiple ring structure. Unlike other lipids, steroids have four linked carbon rings and are hydrophobic and insoluble in water. Cholesterol is one example of a steroid that has a fused ring structure and a short tail. Steroids are also classified as alcohols because they often have the -OH functional group.