If this process represents facilitated transport, the molecules moving inside the cell MOST likely represent: ?

well, i believe that the answer is 2. : 3

japan is the correct anwser because i already took the test and i passed it

air enters through the nose, moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi andbronchioles till the alveoli.