Question

activity: facilitated diffusion
3 parts 0.67 of 1 point
structure b is a
extracellular fluid
cytoplasm
b
transport protein
water molecule
phospholipid
solvent
solute

Explanation:

In facilitated diffusion, transport proteins in the cell - membrane help molecules cross the membrane. Structure B is embedded in the cell - membrane and appears to be facilitating the movement of molecules, which is characteristic of a transport protein. Water molecules are small and usually pass through aquaporins or by simple diffusion. Phospholipids make up the cell - membrane bilayer but are not the structure shown. Solvents and solutes are substances involved in diffusion but not the structure itself.

Answer:

transport protein