Red blood cells placed in a solution with the same water concentration as their cytoplasm (0.85 per cent salt solution) will not experience an overall change in volume. No osmosis occurs.

Once this comes into contact with the cell walls of the berries, the juice leeches out of the berries to mix with the sugar. Why does this osmosis effect make for such delicious berries?

Osmosis is the scientific term for the movement of water across a partially permeable membrane. Overall water will move from a less concentrated solution to a more concentrated solution.This ...