The use of proteins in a cell
membrane to move molecule from a
low concentration on one side to a
high concentration on the other.

The use of proteins in a cell  membrane to move molecule from a  low concentration on one side to a  high concentration on the other is done by membrane transport proteins (Carrier proteins)

Explanation:

Carrier- mediated transport can be described as a type of transport in which carrier molecules assist in the movement of molecules inside or outside the cell.

There are two types of membrane transport proteins:

Channel proteins can be described as proteins which open channels in the cell membrane. Molecules tend to move along the concentration gradient i.e from a higher concentration to a lower concentration through this phenomenon.

Carrier proteins can be described as proteins which open in one direction only. The facilitate the movement of molecules against the concentration gradient i.e from a lower concentration to a higher concentration.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

d. groundwater flows through the subsoil and deposits minerals.