At rest, 9.9 kJ / mol of energy is used to pumping extracellular potassium ions into the cell. Assume that the external concentration of potassium ions is 10.4 mmol / L and calculate the intracellular concentration of potassium ions at 36 ° C.?
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The resting potential in a nerve cell generates due to an imbalance in the concentration of Na+, K and proteins. At rest there is high concentration of K
+
and proteins inside while there is high Na
+
concentration outside. This creates a negative charge inside and positive charge outside.
The unequal distribution of Na+ and K+ is maintained by utilizing chemical energy in the form of ATP. It involves the operation of Na
+
K
+
ATPase enzyme which is present in the plasma membrane. This pump uses ATP to pump sodium out of cells while pumping potassium into cells, both against their concentration gradients
Therefore, the correct answer is 'Assertion is correct but Reason is incorrect'.
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