Transport in Animals IGCSE

Multiple Choice

Does training in the mountains help an athlete?

• YES

• NO

Multiple Choice

Let's RECALL: What is diffusion?

• Diffusion is the mixing of two substances in a solid state.
• Diffusion is the net movement of particles from a region of their higher to a region of their lower concentration, as a results of random movement

• Diffusion is the transfer of energy from low to high concentration.
• Diffusion is the process of molecules moving randomly without any concentration gradient.