Question

which mineral is required for electrolytes involved in the resting membrane potential?
a calcium
b sodium
c iron
d iodine

Explanation:

Sodium - potassium pumps play a crucial role in maintaining the resting membrane potential. Sodium is one of the key electrolytes involved in this process. Calcium is more related to muscle contraction and other functions, iron is important for oxygen - carrying in blood, and iodine is essential for thyroid hormone synthesis.

Answer:

B. Sodium