What is mandatory in the process of facilitated diffusion?

Identify the type of transport shown in the given image.

In which transport,carrier molecule is necessary but energy is not utilised?

Consider the following statements and choose the correct answer:
$I.$ Carrier proteins are needed by both facilitated diffusion and active transport and are sensitive to inhibitors that react with protein side chains.
$II.$ Different types of proteins present in the membrane play a major role in both active as well as passive transport.
$III.$ The carrier proteins needed by facilitated and active transport are specific.
$IV.$ There is no need of energy to pump molecules against a concentration gradient in active transport.
$V.$ Transport rate reaches a saturation point when all the active proteins are used.

In antiport,

Which of the following is true for both active transport and facilitated diffusion?