The molecules that are unable to pass through the phospholipid bilayer is sugar .
What is phospholipid bilayer?
Phospholipid bilayer refer to a two thin layers which consists of hydrophobic head and hydrophilic tail which allow allow the inflow or outflow of gases and smaller substances in cells.
Therefore, The molecules that are unable to pass through the phospholipid bilayer is sugar .
Learn more about phospholipid bilayer below.
https://brainly.com/question/14445282
#SPJ1
