The Transport System That Maintains the Sodium Gradient Across the Cell

question 4

Multiple Choice

The transport system that maintains the sodium gradient across the cell membrane:

• A) involves an ATPase enzyme.
• B) is a symport system with glucose as a cotransported solute.
• C) moves sodium into the cell.
• D) hydrolyzes ATP in the membrane, in a mechanism independent of the movement of sodium ion.
• E) is an antiport system that derives its energy from high concentrations of glucose.

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