BIOL 243 · The Cell · USC Upstate

Cell Walkthrough

The membrane, transport, organelles, DNA to protein, and cell division, one moving picture 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 · BIOL 243 Human Anatomy & Physiology · Chapter 3, The Cellular Level of Organization (OpenStax Anatomy & Physiology 2e) · Use the left and right arrow keys to move between steps. Pair this with the Cell Lab.
Diagrams are simplified and not to scale. Molecule counts, speeds and sizes are exaggerated so you can see them. DNA is drawn as a flat ladder instead of a twisted helix, replication is shown without leading and lagging strands, and organelles are not drawn to their real sizes.