What is the net charge movement across the membrane during Na/K-ATPase activity?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the Cardiac Electrophysiology Test. Study with interactive quizzes and multiple choice questions. Each question includes helpful hints and detailed explanations. Start your journey to success on your cardiac exam now!

Multiple Choice

What is the net charge movement across the membrane during Na/K-ATPase activity?

Explanation:
The Na+/K+-ATPase moves 3 Na+ out and 2 K+ in for each cycle, using one ATP. This creates a net loss of one positive charge from inside to outside, so there is a net outward movement of positive charge. This electrogenic action helps maintain a negative resting membrane potential. Therefore, the net charge movement is outward of positive charge, not into the cell and not zero.

The Na+/K+-ATPase moves 3 Na+ out and 2 K+ in for each cycle, using one ATP. This creates a net loss of one positive charge from inside to outside, so there is a net outward movement of positive charge. This electrogenic action helps maintain a negative resting membrane potential. Therefore, the net charge movement is outward of positive charge, not into the cell and not zero.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy