Every structure here is GROWN from real biology — not an artist's drawing. The wall is built from molecules, the DNA helix uses the measured 10.5 base-pairs-per-turn, the nuclear doorway has its real eight-fold symmetry. The number is on the panel beside each one.
Zoom to dive. Scroll the wheel, drag the bottom slider, or pick a level on the left. This is not a camera dolly — you cross between real size levels, so you feel how 2 metres of DNA fold into a 6-micron nucleus. The ruler (bottom-left) shows the true scale every moment.
Edit the recipe. Each level shows the parameters behind its shape — move a slider and the geometry rebuilds. Push one to the edge and watch the cell react: drop the mitochondria folds and the energy meter empties; remove the pores and the cell seals up and fades.
Cell types (top) reshape the whole-cell view. The deep zoom (nucleus → DNA) tells the eukaryotic DNA-packing story; bacteria pack DNA differently and it's noted where it matters.
Honest-model notes: deep zoom is eukaryote-only; the DNA is schematic (real bases are letters here, A/T/G/C); the ruler reports a declared scale.