When transport proteins simultaneously move two molecules across a membrane in the same direction ,the process is called

Simultaneous movement of two molecules across a membrane in the same direction is know as

Simultaneous movement of two molecules across a membrane in the same direction is known as:

Simultaneous movement of two molecules across a membrane in same direction is known as:

Active transport from outside to inside of molecules across a membrane requires :

Active transport from outside to inside of molecules across a membrane requires

Movement of molecules across the cell membrane without the requirement of energy is called

When a cell expends energy to move a solute across its membrane against a concentration gradient, this process is called ………..