Match the ions, labelled a. through d., with their various roles. (Options may be used more than once or not at all.)
-ion whose equilibrium potential is greater than the resting membrane potential

Question

Quizplus · Accepted Answer

Potassium ion (K⁺) has an equilibrium potential that is greater than the resting membrane potential in most cases. This is because most cells have a higher concentration of K⁺ ions inside the cell compared to outside, and the cell membrane is more permeable to K⁺ than other ions.

Answer: A and C 
 Sodium ion (Na⁺) and Calcium ion (Ca²⁺) both have equilibrium potentials that are greater than the resting membrane potential in certain situations such as during an action potential. However, neither of these ions are listed as options. Chloride ion (Cl⁻) has an equilibrium potential that is typically less than the resting membrane potential, so option D is not correct.

Match the Ions, Labelled A