The correct answer is solute. I'm pretty sure
The ER comes in two different morphological forms: smooth ER and rough ER
Answer:
Embedded in the lipid bilayer are large proteins, many of which transport ions and water-soluble molecules across the membrane. Some proteins in the plasma membrane form open pores, called membrane channels, which allow the free diffusion of ions into and out of the cell.
Flowering plants are the most successful land plants because theri seeds are protected in fruits
