Up to 25% of a Cell's ATP Is Used to Run

question 67

Multiple Choice

Up to 25% of a cell's ATP is used to run sodium-potassium pumps. Without the resulting sodium and potassium gradients, neurons and muscles cannot fire properly.
-If a person is poisoned with cyanide,they cannot generate ATP,and die within a few minutes.In relation to the sodium-potassium pump,what specific impact would cyanide have on concentrations across the cell membrane?

• A) Sodium and potassium concentrations would both be higher inside the cell.
• B) Both sodium and potassium concentrations would become isotonic outside the cell.
• C) Sodium concentration would be higher outside the cell, while potassium concentration would be higher inside the cell.
• D) Sodium and potassium concentrations would both be higher outside the cell.
• E) Both sodium and potassium concentrations would reach equilibrium conditions across the cell membrane.

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