Tutorial
iGCSE Biology: Diffusion
Learn the definition of diffusion, the factors affecting its rate, and how it applies to biological systems like gas exchange.
Tutorial
iGCSE Biology: Diffusion
Learn the definition of diffusion, the factors affecting its rate, and how it applies to biological systems like gas exchange.
Management & Tools
Deck Contents
23 CardsLesson#1
This deck explains diffusion, a fundamental process for moving substances in biology. We'll start with the official definition, which is important to know for your exams.
Lesson#2
Diffusion is the net movement of particles from a region of higher concentration to a region of lower concentration. This happens as a result of the random movement of particles.
Quiz#3
Complete this definition: Diffusion is the net movement of particles from a region of higher concentration...
to a region of lower concentration
Quiz#4
What term describes the overall movement of particles from a region of higher concentration to a lower one?
net movement
Lesson#5
But why do these particles move at all? All molecules and ions have their own energy of movement, which is called kinetic energy. This kinetic energy causes them to move around randomly, bumping into each other and spreading out.
Quiz#6
What causes the random movement of particles that leads to diffusion?
their kinetic energy
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