Chloride ions : Simple diffusion :: Some amino acids and glucose : ...

Which of the following processes is immediately affected by the loss of $ATP$?

Movement among cells against concentration gradient is called

$S -$ Statement: Energy is consumed during active transport.
$R -$ Reason: This transport occurs against the concentration gradient of the substances.

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.

Define the following terms:
$(1)$ Antiport
$(2)$ Active transport