Hole's Essentials of Human Anatomy & Physiology, 10th Edition (Shier)

Chapter 2: Chemical Basis of Life

Sodium-Potassium Exchange Pump (Quiz 2)

View the animation below, then complete the quiz to test your knowledge of the concept.

1.		Which of the following statements are not true about the sodium potassium pump?
			A)	The ions from the intracellular fluid plus an ATP molecule bind to the carrier protein on the inside of the cell membrane.
			B)	ATP is broken down into ADP and potassium to supply the energy.
			C)	The carrier protein changes shape as it transports ions from the intracellular fluid to the extracellular fluid.
			D)	The ions from inside the cell are transported across the cell membrane.
			E)	The ions are then released into the extracellular fluid.
2.		Which of the following statements are not true about the sodium potassium pump?
			A)	After releasing ions into the extracellular fluid, the carrier protein exhibits a new conformation.
			B)	With this new conformation, the carrier protein can now bind to different ions in the extracellular fluid.
			C)	The ions in the extracellular fluid bind to the carrier protein, and the potassium attached to the carrier protein is released.
			D)	The carrier protein then changes shape again.
			E)	The ions from the extracellular fluid are then transported across the cell membrane to the inside of the cell.
3.		The sodium potassium exchange pump is an example of...
			A)	diffusion.
			B)	facilitated diffusion.
			C)	active transport.
			D)	osmosis.
			E)	filtration.
4.		The sodium potassium exchange pump moves three potassium ions out of the cell and two sodium ions into the cell with each cycle.
			A)	True
			B)	False
5.		Active transport moves substances from an area of high concentration to an area of low concentration of that substance.
			A)	True
			B)	False