The nine essential structural components of the fluid mosaic model of the plasma membrane.

The eight planets of the Solar System in orbital order along with the main asteroid belt.

Key geological features and structural components formed during the tectonic folding of continental crust.

The key stages and components of a nuclear fission reaction, from neutron capture to fission fragments and energy release.

The main organelles and structural components of a eukaryotic plant cell.

The nine major substrate molecules and intermediates of the citric acid cycle in sequential order.

The main cellular components and organelles of a unicellular green alga.

The key inputs, outputs, and internal stages of photosynthesis within a chloroplast.

The nine primary bones and skeletal regions of the human body in anterior view.

A simplified scheme for the food chain (A) and food web (B) circuits.