Biology past paper questionWatch
Describe two ways in which these movements are similar:
i know its got something to do with concentration gradients does anyone have a full idea as to how to answer the question ??
Oxygen moves by diffusion, water by osmosis.
Both involve movement of molecules from an area of high concentration to an area of low concentration. Both of these occur across a semi-permeable membrane, and they both continue until equilibrium. When equilibrium is reached, the molecules still move across the membrane, however concentration is equal on both sides.
used some of those points and managed to find the mark scheme to help me out too .