Multiple choice

Na+/K+ pump in plasma membrane of animal cells is an example for

  1. passive transport

  2. osmosis

  3. ATP free transport

  4. active transport
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Na+/K+ pump requires the direct participation of the energy-rich molecule ATP and is active transport. Sodium-potassium (Na+/K+) pump is found in all animal cells and is an integral membrane of glycoprotein. It breaks down a molecule of ATP to ADP and phosphate (Pi) and uses the energy released to bring two K+ ions into the cell and export three Na+ ions.

Keep practicing — related questions