What knowledge have you connected with past knowledge?

As biochemistry is a complex subject area that connects with many other scientific areas of study, it is understandable and expected that knowledge learned in this class can relate to many learned in the past. One area that I have been able to connect with past knowledge is the discussion of RNA as the first biomolecule, as it can both catalyze as well as encode knowlege. This ties in nicely to the Cell Biology class that I took. We discussed Tom Cech, Nobel Laureate, and his experimental discovery of RNA as a catalyst in great detail. Also, in Animal Physiology, we discussed Michaelis Menten kinetics and its application to the rate of reactions and the uptake of glucose into an animal cell. Finally, the induced fit model of enzyme-substrate binding tied into material learned in Principles of Biology, Anatomy and Physiology, and Animal Physiology. In this case, however, the model was modified. The new model of enzyme-substrate binding replaced the "lock and key" model that was taught in those classes in the past.