molecular-biology
2 free lessons tagged molecular-biology across Science. Each one is a short sequence of focused steps with narration and a five-question quiz at the end — take them in any order, no signup required.
mRNA as a Programmable Drug
Instead of manufacturing a protein, an mRNA medicine delivers the instructions and lets your own cells build it. This lesson covers the anatomy of a therapeutic mRNA, the immune problem that stalled the field for decades, and the modified-nucleoside breakthrough by Kariko and Weissman that made it work, the reason mRNA is a programmable platform.
DNA, mRNA, protein: the central dogma
The flow of information from DNA through mRNA to protein, what mutations actually change, why single-base changes can have outsized consequences, and the structural reason genome editing aims at DNA specifically.