Sodium-Potassium Pump Flashcards
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Questions and Answers

What is the function of the sodium-potassium pump?

To pump sodium ions out of the cell and potassium ions into the cell.

The source of energy used to power the sodium-potassium pump is the breakdown of ATP.

True

During one cycle, the sodium-potassium pump binds and moves 3Na+ and 2K+.

True

The sodium-potassium pump is a trans-membrane protein.

<p>True</p> Signup and view all the answers

The binding and releasing of sodium or potassium ions are due to conformational changes in the protein.

<p>True</p> Signup and view all the answers

The sodium-potassium exchange pump is an example of active transport.

<p>True</p> Signup and view all the answers

Active transport moves substances from an area of high concentration to an area of low concentration.

<p>False</p> Signup and view all the answers

What are lysosomes?

<p>Membrane-bound vesicles that arise from the Golgi apparatus.</p> Signup and view all the answers

The lysosome contains hydrolytic enzymes.

<p>True</p> Signup and view all the answers

Phagocytosing white blood cells are expected to contain the most active lysosomes.

<p>True</p> Signup and view all the answers

The lysosome's function is the destruction and recycling of old organelles.

<p>True</p> Signup and view all the answers

The enzymes found in lysosomes were formed in the endoplasmic reticulum.

<p>True</p> Signup and view all the answers

Study Notes

Sodium-Potassium Pump

  • The sodium-potassium pump actively transports sodium ions out of cells and potassium ions into cells, crucial for maintaining cellular homeostasis.
  • ATP breakdown provides the energy necessary for the pump's function, highlighting its role in active transport.
  • Each cycle of the pump moves three sodium ions (Na+) out and two potassium ions (K+) into the cell, establishing concentration gradients essential for various cellular processes.
  • The pump is a trans-membrane protein that spans the cell membrane, demonstrating its integral role in cellular mechanisms.

Mechanism of Action

  • Binding and releasing of Na+ and K+ ions involves conformational changes in the sodium-potassium pump, ensuring effective ion exchange.
  • The sodium-potassium pump exemplifies active transport, wherein substances are moved against their concentration gradients, a process essential for nutrient absorption and cellular signaling.

Lysosomes

  • Lysosomes are membrane-bound vesicles that originate from the Golgi apparatus and are essential for various cellular processes.
  • They contain hydrolytic enzymes that break down waste materials and cellular debris, aiding in cellular maintenance.
  • Phagocytic white blood cells are rich in lysosomes, reflecting their active role in degrading pathogens and recycling components.
  • Lysosomes contribute to the destruction and recycling of old organelles, promoting cellular health and longevity.
  • Enzymes located in lysosomes are synthesized in the endoplasmic reticulum, linking different organelles' functions within the cell.

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Test your knowledge on the Sodium-Potassium pump with these flashcards. Learn about its function, energy source, and ion transport specifics. Perfect for students studying cell biology or physiology.

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