First things first. Copper as a mineral, though important, is needed by the body in small amounts only. It helps maintain ...

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.

In living things, diffusion allows substances to move in and out of cells. It's how red ... from blood plasma to body cells Write a short paragraph to answer the following question. Tap 'Show ...