Which process is responsible for short distance movement?

Read carefully the following statements and choose the right answer from the options given below.
$I$. Diffusion is a slow process and it does not depend upon the living system.
$II$. Usually,the process of diffusion does not need energy.
$III$. Diffusion can occur from one part of a cell to another part of the same cell,or from one cell to another,and from one tissue to another tissue.
$IV$. Diffusion is a rapid process over short distances,but extremely slow over long distances.

Which of the following does not require a carrier molecule during transport through cell membranes?

Which of the following transport mechanisms require protein for the movement of substances?

The $Na^+/K^+$ pump is an example of ..........

When a molecule moves across a membrane independently of other molecules,the process is called ...........