The cellular function that belongs in the shared (overlapping) section of a Venn diagram comparing carbohydrates and lipids is energy storage.

Why “energy storage” is shared

  • Both carbohydrates and lipids store chemical energy that cells can later break down to make ATP , the main energy currency of the cell.
  • Carbohydrates store energy mainly as glycogen in animals and starch in plants, while lipids store energy as triglycerides in fat tissue.

What goes in the non‑shared parts

  • Carbohydrates only :
    • Quick, short‑term energy (e.g., glucose for immediate use).
* Structural roles in some organisms (e.g., cellulose in plant cell walls).
  • Lipids only :
    • Long‑term, high‑density energy storage.
* Major components of **cell membranes** and some **hormones** (e.g., steroid hormones).

So for your Venn diagram, place “energy storage” in the overlapping region and keep the rest of the functions in the separate circles.

Information gathered from public forums or data available on the internet and portrayed here.