Here's why:
* DNA and RNA store genetic information. They contain the instructions for building proteins, which are the primary workhorses of cells.
* Carbohydrates are assembled from simple sugars. These sugars are produced through a process called photosynthesis in plants, or they are obtained from food.
* Enzymes, which are proteins, facilitate the assembly of carbohydrates. These enzymes are coded for by DNA and built using RNA.
In summary: DNA and RNA are involved in the production of proteins, including the enzymes that are essential for carbohydrate synthesis. However, DNA and RNA themselves are not directly involved in building carbohydrates.