During photosynthesis in plant cells, glucose is formed. When there are excess supplies of glucose, starch is synthesized as a storage compound. A diagram showing a starch polymer made up of many glucose molecules. An arrow indicating a reaction involving amylase points to a glucose molecule.

Since photosynthesis primarily takes place in the leaves, it is essential that glucose can be transported out of the cell to other parts of the plant. The selectively permeable plasma membrane only allows certain molecules to cross freely through the phospholipid bilayer.

Is glucose a molecule that is allowed to cross the selectively permeable membrane freely?

No, glucose passes through a channel protein with the concentration gradient via facilitated diffusion.
Yes, glucose is able to freely pass through the phospholipid bilayer because it is a small, polar molecule.
Yes, glucose is able to freely pass through the phospholipid bilayer because it is a small, nonpolar molecule.
No, glucose is pumped through the plasma membrane by a solute pump because it is too large to cross the membrane on its own.