Statement When is this true? 1. Orange dye moves independently of purple dye. never 2. Concentration gradients exist that drive diffusion of both dyes. always 3. There is a net movement of orange dye from side A to side B. only before gulbrum is renched 4. Purple dye moves only from side to side A only at equilibrium 5. There is no net movement of purple dye. A membrane permeable to both dyesi initial condition final condition (equilibrium)