Why is potassium the cation of life?

A new hypothesis explores how potassium came to be the dominant biological cation. Image credit: Dan-Cristian Pădureț on Unsplash Why is it that in all living cells there is a higher concentration of potassium (K+ ions) in the cytoplasm than in the surrounding medium, and the reverse for sodium (Na+ ions)? This certainly isn’t chance, […]