See It · The Chemical Level of Organization

Body Chemistry Walkthrough

From single atoms to the molecules that build you, one step at a time. Go at your own pace. Nothing here is graded.

Speed

Think of it like this

Quick check

Wrong answers are fine here. Read why, then try again.

Dr. Akash Garg · See It: Anatomy & Physiology · Chapter 2, The Chemical Level of Organization (OpenStax Anatomy & Physiology 2e) · Use the left and right arrow keys to move between steps. Pair this with the Body Chemistry Lab.
Diagrams are simplified and not to scale: atoms are drawn with the flat shell (Bohr) model, molecules are flattened to 2D, and reactions are slowed down or sped up so you can see them.