The structure in the given statement is certainly a semipermeable membrane. The correct option is D.
A semipermeable membrane is a hindrance that allows some molecules to pass while blocking the passage of others.
To transport any substance from outside to inside or vise-versa, it require use of energy using active passage.
Substances pass against its concentration gradient during active transport, from a low concentration area to a high concentration area.
This process is considered active because it necessitates the use of fuel basically in the form of ATP. It is the polar opposite of passive transportation.
Active transport is commonly associated with the accumulation of high concentrations of molecules required by the cell, such as ions, glucose, and amino acids.
Thus, the correct option is D.
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