Question

activity: facilitated diffusion 3 parts | 0.33 of 1 point structure a is a ____. extracellular fluid a cytoplasm solvent solute transport protein phospholipid water molecule check answer

Explanation:

In facilitated diffusion, substances move across the cell - membrane with the help of transport proteins. Structure A is moving from an area of higher concentration in the extracellular fluid to an area of lower concentration in the cytoplasm through a membrane - spanning structure. Solvents are the substances in which solutes dissolve, and water is a common solvent. Solutes are the substances dissolved in a solvent. Phospholipids make up the cell - membrane bilayer. Structure A is not a phospholipid, water molecule, or solvent. It is a substance being transported, which makes it a solute.

Answer:

B. solute