Question

based upon your understanding of diffusion, molecules will tend to move which way?
from low concentration to high concentration
from high concentration to low concentration
molecules typically stay in areas of equal concentration

what type of solution resulted in this red onion microscope image?
image of red onion cells
distilled water
tap water solution
salt water solution

Explanation:

First Question (Diffusion Direction)

Diffusion is the passive movement of molecules from an area of higher concentration to lower concentration to achieve equilibrium. So molecules move from high to low concentration.

In a salt water (hypertonic) solution, water leaves red onion cells (plasmolysis), but the image here shows cells likely in a hypotonic or isotonic? Wait, no—wait, red onion cells in distilled water (hypotonic) would swell, but if the cells look normal or maybe turgid? Wait, no, the options: Distilled water is hypotonic, tap water has some solutes, salt water is hypertonic. Wait, the image—if cells are turgid (normal or swollen), distilled water (hypotonic) causes water to enter, making cells turgid. Salt water would cause plasmolysis (shrinking). So the image likely shows cells in distilled water (since tap water has more solutes than distilled, but distilled is most hypotonic). Wait, but maybe the image is of cells in distilled water (option A). Wait, but let's recheck: when red onion cells are in distilled water, water enters via osmosis, cells become turgid. In salt water, they shrink. So if the image shows cells that are turgid (not shrunk), then distilled water is correct.

Answer:

B. From high concentration to low concentration

Second Question (Red Onion Solution Type)