Question

part 9: label each picture as isotonic, hypotonic, or hypertonic. pay attention to the arrows!

Explanation:

1. First top image: Water enters the cell, swelling it—this is a hypotonic environment (lower solute outside, water moves in).
2. Second top image: Water moves equally in and out of the cell, which maintains its normal shape—this is an isotonic environment.
3. Third top image: Water leaves the cell, causing it to shrivel—this is a hypertonic environment (higher solute outside, water moves out).
4. First bottom image: Water enters the plant cell, filling the vacuole and keeping the cell turgid—this is a hypotonic environment.
5. Second bottom image: Water moves equally in and out of the plant cell, maintaining a stable state—this is an isotonic environment.
6. Third bottom image: Water leaves the plant cell, causing the vacuole to shrink and the cell membrane to pull away from the cell wall—this is a hypertonic environment.

Answer:

Top left: Hypotonic
Top middle: Isotonic
Top right: Hypertonic
Bottom left: Hypotonic
Bottom middle: Isotonic
Bottom right: Hypertonic