Question

question: which side has the lower concentration of water molecules? question: what do the white arrows in the figure represent? question: why are there no arrows showing movement of the sugar molecules?

Explanation:

1. The side with more solute (less water - free) has a lower water - molecule concentration. Usually, in osmosis scenarios, the side with a higher concentration of a solute like sugar has a lower water - molecule concentration.
2. In diagrams related to diffusion or osmosis, white arrows often represent the direction of movement of a substance. In the context of water movement across a semi - permeable membrane, they likely represent the direction of water flow (osmosis).
3. If there are no arrows showing the movement of sugar molecules, it could be because the membrane is impermeable to sugar molecules, preventing their free movement across the membrane.

Answer:

1. The side with a higher solute (e.g., sugar) concentration has the lower concentration of water molecules.
2. The white arrows likely represent the direction of water movement (osmosis).
3. The membrane may be impermeable to sugar molecules, thus no movement is shown.