Question

The principal ion that is not involved with the phenomena of producing cell potentials is ______________

(a) sodium

(b) potassium

(c) chlorine

(d) hydrogen

I got this question by my college director while I was bunking the class.

The above asked question is from Origin of Bioelectric Signals topic in chapter Bioelectric Signal and Electrodes of Biomedical Instrumentation

Answer 1

Correct answer is (d) hydrogen

The explanation: Sodium (Na^+), Potassium (K^+), and Chlorine (Cl^–) are the principal ions involved with the phenomena of producing cell potentials. Na+ is present outside the cell membrane and creates a positively charged environment outside the cell membrane. Cl^– is present inside the cell membrane and is responsible for the negative environment inside the cell membrane.