Identify the processes occurring in $(I)$,$(II)$,and $(III)$ based on the provided diagram.

Read the following statements regarding porins and select the correct option given below:
$I$. Porins are transport proteins.
$II$. Channel proteins are a type of transport protein,which are usually gated.
$III$. Carrier protein binds the particular solute to be transported.
$IV$. Particular solute is delivered to the other side of the membrane by carrier proteins.

Identify the water transport pathways $P$ and $Q$ shown in the given figure.

In a $X$, both molecules cross the membrane in the same direction; in an $Y$, they move in opposite directions.

Which of the following criteria does not pertain to facilitated transport?

How is facilitated diffusion different from diffusion?