THE CELL
TRANSPORT INTO AND OUT OF THE CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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out of, into
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into, out of
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Detailed explanation-1: -Movement of oxygen across the cell membrane is an example of diffusion as the concentration of oxygen is greater outside the cell than the inside.
Detailed explanation-2: -Cells are always lower in concentration of glucose than the blood that arrives because the cells use it in respiration. The blood now has a lower concentration of glucose because it has diffused into the cells.
Detailed explanation-3: -During diffusion, molecules move from the side of high concentration toward the side of low concentration to equalize the gradient. Since the concentration of oxygen is lower inside the cell than outside the cell, oxygen can cross the membrane by simple diffusion. Oxygen crosses the plasma membrane by simple diffusion.
Detailed explanation-4: -Thus, the correct answer is ‘Concentration of carbon dioxide is less outside the cell than inside the cell.