Question

which describes the basic structure of a fatty acid?
a long carbon and hydrogen chain and a phosphate group
a long carbon and hydrogen chain and a glycerol
a long carbon and hydrogen chain and a carboxyl group
a long carbon and hydrogen chain and an alcohol

Explanation:

A fatty acid consists of a long hydrocarbon chain (carbon - hydrogen chain) and a carboxyl group (-COOH). The carboxyl group is characteristic of acids and is what makes it a fatty acid. Other options have incorrect functional groups or components. A phosphate group is in phospholipids, glycerol is part of triglycerides with fatty acids, and alcohol is not part of the basic fatty - acid structure.

Answer:

a long carbon and hydrogen chain and a carboxyl group