Tag: sodium
Security Gates in the Cell
A key characteristic of life is active transport: control over what enters and exits the cell. Closer looks reveal exquisite “selectivity filters” with moving parts that make active transport work.
Rare Earth Elements and Intelligent Design
Can we explain human technology merely by supernova explosions and blind chance? In rare earth elements, we find hints of a better explanation.
This Didn’t Evolve a Few Mutations at a Time
Let’s have a look at an example: nerve cells and their action potential signals.