Question

question 3
1 pts
what happen to an animal cell with 1% salt concentration that is placed in 20% salt solution? what is the direction of osmosis in that case?

it shrinks, out of the cell
it inflates, out of the cell
it inflates, into the cell
it stays the same, in and out of the cell with the same rates

Explanation:

🆕 New Concept Discovered: Osmosis and Tonicity
Water moves to dilute higher solute concentrations.

Step 1: Compare solute concentrations

The animal cell has an internal salt concentration of \(1\%\). The surrounding environment (the solution) has a salt concentration of \(20\%\).

Because the salt concentration outside the cell is much higher than inside, the surrounding solution is hypertonic relative to the cell.

Step 2: Determine the direction of water movement (osmosis)

Osmosis is the movement of water across a semipermeable membrane from an area of lower solute concentration (higher water concentration) to an area of higher solute concentration (lower water concentration).

To balance the concentrations, water will move from the inside of the cell (\(1\%\) salt) to the outside of the cell (\(20\%\) salt). Therefore, the direction of osmosis is out of the cell.

Step 3: Determine the effect on the cell

As water leaves the animal cell, it loses volume and pressure. This causes the cell to shrivel or shrink.

Answer:

It shrinks, out of the cell