Which of the following is true regarding the Na*/K* pump? O Uses one ATP for every group of Na+ that is pumped across the channel and another ATP for every group of K+ that is pumped across the channel O Must be deosphorylated to pump K+ into the cell O Is an example of secondary active transport O Can only function when the inactivation gate is open

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Which of the following is true regarding the Na*/K* pump?
O Uses one ATP for every group of Na+ that is pumped across the channel and another ATP for every group of
K+ that is pumped across the channel
O Must be de osphorylated to pump K+ into the cell
O Is an example of secondary active transport
O Can only function when the inactivation gate is open
Transcribed Image Text:Which of the following is true regarding the Na*/K* pump? O Uses one ATP for every group of Na+ that is pumped across the channel and another ATP for every group of K+ that is pumped across the channel O Must be de osphorylated to pump K+ into the cell O Is an example of secondary active transport O Can only function when the inactivation gate is open
An anion (like X-) is found in greater concentration inside the cell than outside. Which of the
following statements best describes forces acting on the anion at the resting membrane potential
(-70 mV)?
O The chemical force is directed into the cell and the electrical force is directed out of the cell.
O Both the chemical and electrical forces are directed out of the cell.
O The chemical force is directed out of the cell and the electrical force is directed into the cell.
O Both the chemical and electrical forces are directed into the cell.
O There is insufficient information to answer this question.
Transcribed Image Text:An anion (like X-) is found in greater concentration inside the cell than outside. Which of the following statements best describes forces acting on the anion at the resting membrane potential (-70 mV)? O The chemical force is directed into the cell and the electrical force is directed out of the cell. O Both the chemical and electrical forces are directed out of the cell. O The chemical force is directed out of the cell and the electrical force is directed into the cell. O Both the chemical and electrical forces are directed into the cell. O There is insufficient information to answer this question.
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