Respuesta :
The molecules requiring active transport to move across plasma membrane are Na+, K+, calcium and white blood cells.
Active Transport:
Active transport is the movement of molecules across the plasma membrane from lower concentration to Higher concentration active transport requires energy (ATP) for the movement of these molecules.
There are many molecules which requires energy for moving across the plasma membrane some of those molecules are sodium and potassium, movement of calcium ions in cardiac muscles, amino acid transport across intestinal linings in human gut and this active transport also takes place in white blood cells to defend attacking diseases.
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