Question

In active transport:

a. molecules move across the plasma membrane by crossing the lipid bilayer directly, rather than by using a transport protein.
b. the plasma membrane forms a pocket that pinches inward, forming a vesicle that contains material from outside the cell.
c. no energy input is required from the cell.
d. a vesicle inside the cell fuses with the plasma membrane and releases its contents outside the cell.
e. molecules move across the plasma membrane against their concentration gradient.

Answer 1

The correct option is: e. molecules move across the plasma membrane against their concentration gradient

Step-by-step explanation:

Active transport refers to the movement of the particles or molecules from higher concentration to lower concentration, across the plasma membrane of a cell. This transport requires cellular energy as the movement of the molecules is against the concentration gradient.

Active transport can be divided into primary and secondary active transport.