Question

Select one FALSE statement regarding diffusion: Diffusion is the movement of particles from high to low concentration Substance A (molecular weight 120) will diffuse faster than substance B (molecular weight 240) Solute in solution will diffuse faster if the solution is heated The source of energy for diffusion comes from cellular ATP All of the above are true

Answer 1

The source of energy for diffusion comes from cellular ATP

Step-by-step explanation:

Diffusion is the net movement of particles against concentration gradient. Particles move from higher concentration to lower concentration on their own without requirement of external energy source. Hence no ATP is required for the process. ATP provides energy for movement of particles against the concentration gradient.

Rate of diffusion increases with increase in temperature as kinetic energy of particles increases; also lighter the particles, faster they will move. Hence, a substance with less molecular weight will diffuse faster than heavier substance.