The transport of sodium ions and glucose into the cell is through symnport. For every two sodium ions transported into cell, one glucose is also transported in the same direction. The concentration gradient of sodium is used to transport glucose into the cell, against its own concentration gradient (that is, irrespective of the concentration of glucose). This is why, though the glucose concentration inside the cell is higher compared to the cell exterior, glucose is transported inside. In the given experiment, the concentration of sodium ions inside the cell is initially low or very less. There is a large concentration gradient of Na+ ions, due to which they are transported into the cell easily. Glucose is also transported along with, without any hindrance. When equilibrium is attained between the cell exterior and the cell interior with respect to sodium ions, there is no net movement of ions into the cell. Therefore, symport of glucose is stopped. When the concentration of extracellular Na+ ions increases, the concentration gradient also increases as a result of which there is high net movement of Na+ ions into the cells. The cells reaches equilibrium quickly, and this is why the plateau is reached. B. Leaky channels allow leaking of Na+ and K+ ions to leak down their concentration gradient. Therefore, apart from Na+ K+ pump, the channels also transport the ions, without transporting glucose. Therefore, less glucose enters the cells, the cells reach equilibrium quickly. Solution The transport of sodium ions and glucose into the cell is through symnport. For every two sodium ions transported into cell, one glucose is also transported in the same direction. The concentration gradient of sodium is used to transport glucose into the cell, against its own concentration gradient (that is, irrespective of the concentration of glucose). This is why, though the glucose concentration inside the cell is higher compared to the cell exterior, glucose is transported inside. In the given experiment, the concentration of sodium ions inside the cell is initially low or very less. There is a large concentration gradient of Na+ ions, due to which they are transported into the cell easily. Glucose is also transported along with, without any hindrance. When equilibrium is attained between the cell exterior and the cell interior with respect to sodium ions, there is no net movement of ions into the cell. Therefore, symport of glucose is stopped. When the concentration of extracellular Na+ ions increases, the concentration gradient also increases as a result of which there is high net movement of Na+ ions into the cells. The cells reaches equilibrium quickly, and this is why the plateau is reached. B. Leaky channels allow leaking of Na+ and K+ ions to leak down their concentration gradient. Therefore, apart from Na+ K+ pump, the channels also transport the ions, without transporting glucose. Therefore, less glucose enters the cells, the cells reach equilibrium qu.

1. The transport of sodium ions and glucose into the cell is through symnport. For every two
sodium ions transported into cell, one glucose is also transported in the same direction. The
concentration gradient of sodium is used to transport glucose into the cell, against its own
concentration gradient (that is, irrespective of the concentration of glucose). This is why, though
the glucose concentration inside the cell is higher compared to the cell exterior, glucose is
transported inside.
In the given experiment, the concentration of sodium ions inside the cell is initially low or very
less. There is a large concentration gradient of Na+ ions, due to which they are transported into
the cell easily. Glucose is also transported along with, without any hindrance. When equilibrium
is attained between the cell exterior and the cell interior with respect to sodium ions, there is no
net movement of ions into the cell. Therefore, symport of glucose is stopped.
When the concentration of extracellular Na+ ions increases, the concentration gradient also
increases as a result of which there is high net movement of Na+ ions into the cells. The cells
reaches equilibrium quickly, and this is why the plateau is reached.
B. Leaky channels allow leaking of Na+ and K+ ions to leak down their concentration gradient.
Therefore, apart from Na+ K+ pump, the channels also transport the ions, without transporting
glucose. Therefore, less glucose enters the cells, the cells reach equilibrium quickly.
Solution
The transport of sodium ions and glucose into the cell is through symnport. For every two
sodium ions transported into cell, one glucose is also transported in the same direction. The
concentration gradient of sodium is used to transport glucose into the cell, against its own
concentration gradient (that is, irrespective of the concentration of glucose). This is why, though
the glucose concentration inside the cell is higher compared to the cell exterior, glucose is
transported inside.
In the given experiment, the concentration of sodium ions inside the cell is initially low or very
less. There is a large concentration gradient of Na+ ions, due to which they are transported into
the cell easily. Glucose is also transported along with, without any hindrance. When equilibrium
is attained between the cell exterior and the cell interior with respect to sodium ions, there is no
net movement of ions into the cell. Therefore, symport of glucose is stopped.
When the concentration of extracellular Na+ ions increases, the concentration gradient also
increases as a result of which there is high net movement of Na+ ions into the cells. The cells

2. reaches equilibrium quickly, and this is why the plateau is reached.
B. Leaky channels allow leaking of Na+ and K+ ions to leak down their concentration gradient.
Therefore, apart from Na+ K+ pump, the channels also transport the ions, without transporting
glucose. Therefore, less glucose enters the cells, the cells reach equilibrium quickly.