A student investigates diffusion through two identical membranes at different temperatures. All other conditions are kept the same.
Why is diffusion faster at the higher temperature?
Particles have less kinetic energy and move more rapidly.
Particles have more kinetic energy and become much larger.
Particles have less kinetic energy and become much smaller.
Particles have more kinetic energy and move more rapidly.
42 exam-style questions on Edexcel GCSE Biology 8.1 Exchange surfaces and diffusion, covering 8.1.1 Introduction to exchange and transport, 8.1.2 Alveoli adapted for gas exchange, 8.1.3 Factors affecting rate of diffusion, and 8.1.4 Rate of diffusion using Fick's law. Each one has a worked solution and a mark scheme showing where the marks go.