In studying a transporter,it is found that no external energy input is needed to facilitate the movement of a neutral compound through the transporter.The translocation rate of the compound reaches a plateau at high levels of compound.It is a(n)
A) passive transport channel.
B) passive transport carrier.
C) active transport channel.
D) active transport carrier.

Question

Quizplus · Accepted Answer

The fact that no external energy input is needed and that the translocation rate of the compound reaches a plateau at high levels indicates that this is a passive transport process. The mention of a transporter suggests that it is a carrier rather than a channel. Therefore, the best choice is a passive transport carrier, which is option B.

In Studying a Transporter,it Is Found That No External Energy