Cryo-electron microscopy is allowing cell biologists to see irreducibly complex molecular machines in three-dimensional glory.
Even Charles Darwin, after publishing his theory of evolution, privately admitted “The eye to this day gives me a cold shudder.”
Plants mine energy from a primary source (sun) and transform that energy into a secondary source (sugar).
Chemical signaling in the cell is fairly well known, but what about electrical signaling? Is a cell wired like an electrical network?
Let’s have a look at an example: nerve cells and their action potential signals.