Molecules don't carry anything *in* DNA. Instead, DNA itself carries the instructions for building and maintaining an organism. It does this by containing genes, which are sequences of DNA that code for specific proteins.

Here's a breakdown:

* DNA (Deoxyribonucleic acid): A long, complex molecule that contains the genetic instructions for an organism. It's shaped like a double helix.

* Genes: Segments of DNA that provide the code for specific proteins. These proteins perform various functions in the body, like building tissues, transporting molecules, or regulating chemical reactions.

* Proteins: Complex molecules that carry out various functions in the body based on the instructions encoded in genes.

So, DNA carries the instructions for making proteins, and the proteins are what ultimately carry out the functions of life.

Think of it this way:

* DNA is like a blueprint: It contains the instructions for building a house.

* Genes are like individual sections of the blueprint: Each section provides instructions for building a specific part of the house (e.g., a wall, a door, a window).

* Proteins are like the building materials: They are the bricks, wood, glass, etc., that are used to build the house based on the instructions in the blueprint.

Therefore, DNA is the carrier of genetic information, and it doesn't carry molecules within it. It provides the instructions for building and maintaining an organism through the production of proteins.