Question

During intense

exercise, potassium tends to accumulate in the
fluid surrounding muscle cells. What membrane
protein helps muscle cells counteract this
tendency? Explain your answer.

Answer 1

Sodium ion

Step-by-step explanation:

A sodium/potassium ion channel protein would help the muscle cells counteract this tendency by pumping potassium (K+) into the cell and sodium (Na+) out. This raises the concentration of K+ ions within the axoplasm relative to the outside causing the Na+ ions to diffuse out. This is the resting potential