Question

scenario 8: a slug that is sprinkled with salt it will dehydrate and eventually die. q1. tonicity of the solution? q2. how do the cells respond? q3. what question could you ask to confirm?

Explanation:

Q1

Tonicity refers to the relative solute concentration of a solution compared to a cell's interior. Salt (solute) outside the slug's cells creates a solution with higher solute concentration than the cells' cytoplasm. A hypertonic solution has more solute (less water) outside the cell.

In a hypertonic environment, water moves across the cell membrane via osmosis (from an area of lower solute concentration, the cell's interior, to higher solute concentration, outside the cell). As water leaves the slug's cells, they lose water, shrink (plasmolyze), leading to dehydration and cell death.

To confirm the tonicity and osmotic response, a question could focus on observing water movement or cell changes. For example, asking about the direction of water movement (into or out of cells) or testing with a different solute concentration to see if the response aligns with osmosis in hypertonic conditions. A specific question like "If we place the slug in distilled water (hypotonic solution), will its cells swell (gain water)?" can confirm, as a hypertonic - induced shrinkage should reverse in hypotonic (showing osmosis is the mechanism).

Answer:

The solution (salt - water around slug cells) is hypertonic.

Q2