OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If a cell is needing to pump additional sodium ions out of the cell, what would that cell need in order to do so?
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ATP
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oxygen
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water
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carbon dioxide
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Explanation:
Detailed explanation-1: -A SODIUM-POTASSIUM PUMP uses ATP to move three Na+ ions out of a cell while it moves two K+ ions in.
Detailed explanation-2: -Export of sodium ions from the cell provides the driving force for several secondary active transporters such as membrane transport proteins, which import glucose, amino acids and other nutrients into the cell by use of the sodium ion gradient.
Detailed explanation-3: -The sodium-potassium pump system moves sodium and potassium ions against large concentration gradients. It moves two potassium ions into the cell where potassium levels are high, and pumps three sodium ions out of the cell and into the extracellular fluid.
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