Question

One way of balancing the concentration of ions and molecules within a cell is to use all but _____________ _.​ ATP transfers one of its phosphate groups (becoming ADP) to a transfer protein. This protein changes its conformation so it can bring needed ions into the cell and get rid of unnecessary ions.

Answer 1

The answer is

D) phospholipid channels

Step-by-step explanation:

There are no phospholipid channels in the cell membrane. The cell membrane is composed of a phospholipid bilayer with embedded membrane proteins. These proteins are channels for specific ions, entering and leaving the cell.

Answer 2

D) phospholipid channels