๐Ÿงฌap biology review

Sodium Potassium Pump

Written by the Fiveable Content Team โ€ข Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 examโ€ขWritten by the Fiveable Content Team โ€ข Last updated August 2025

Definition

This is an enzyme (a type of protein) that uses energy from ATP to pump sodium ions out of a cell and potassium ions into it. This helps maintain the cell's resting potential.

AP course connection

Topic 2.7: 2.7 Facilitated Diffusion

Unit 2
2,589 studying โ†’