* Nucleic acids (DNA and RNA) are the molecules that store and transmit genetic information. They are made up of nucleotides, which contain a sugar, a phosphate group, and a nitrogenous base. The sequence of these bases (adenine, guanine, cytosine, and thymine/uracil) forms the genetic code that instructs cells on how to build and maintain an organism.

Let's look at the other options:

* Lipids are fats and oils, which provide energy storage, insulation, and cell structure. They don't contain the genetic code.

* Carbohydrates are sugars and starches, which provide energy and structural support. They don't contain the genetic code.

* Proteins are complex molecules that perform a vast array of functions in the body, including enzymes, hormones, and structural components. While proteins are built according to instructions from the genetic code, they don't contain the code itself.