What are cations?

Cations are defined as positively charged ions. This charge arises when an atom or molecule loses one or more electrons, which are negatively charged, resulting in a net positive charge. Cations play essential roles in various biological processes, such as muscle contraction, nerve impulse transmission, and cellular signaling.

In contrast, negatively charged ions are known as anions, and ions that carry no charge are referred to as neutral particles. Molecules that repel water relate to hydrophobic characteristics, which is another concept entirely. Understanding the role of cations is crucial in biological systems where ion balance and charge play a pivotal role in cellular functions and reactions.