Asked by Victoria Brungot on Jun 14, 2024
Verified
Requires ATP
A) Concentration of K+
B) Concentration of Na+ and Cl−
C) Negatively charged proteins
D) Sodium-potassium pump
E) Plasma membrane is more permeable to this ion because of leak ion channels
Sodium-Potassium Pump
A membrane-bound enzyme complex that exchanges sodium ions for potassium ions across the plasma membrane of cells, crucial for cellular function.
Requires ATP
Describes processes or actions in cells that need adenosine triphosphate for energy.
Concentration Differences
The variance in the amount of a substance in different areas, leading to diffusion from high to low concentration.
- Understand the movements of ions across the plasma membrane and their implications for membrane potential.
Verified Answer
SS
Saraswaty SarasJun 20, 2024
Final Answer :
D
Explanation :
The sodium-potassium pump is an example of a mechanism that requires ATP to maintain concentration differences across the plasma membrane. It actively transports sodium (Na+) out of the cell and potassium (K+) into the cell against their concentration gradients.
Learning Objectives
- Understand the movements of ions across the plasma membrane and their implications for membrane potential.