Diffusion (AQA GCSE Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is diffusion?
What is diffusion?
Particles moving from high to low concentration
Does diffusion require energy input?
Does diffusion require energy input?
No, it's a passive process
What is a concentration gradient?
What is a concentration gradient?
Difference in particle numbers between areas
How does increasing temperature affect diffusion rate?
How does increasing temperature affect diffusion rate?
Makes it faster
What happens when the concentration difference increases?
What happens when the concentration difference increases?
Diffusion becomes faster
How does surface area affect diffusion across membranes?
How does surface area affect diffusion across membranes?
Bigger area = faster diffusion
How does membrane thickness affect diffusion rate?
How does membrane thickness affect diffusion rate?
Thinner = faster
Why does oxygen diffuse into animal cells?
Why does oxygen diffuse into animal cells?
Cells need it for respiration
Why does carbon dioxide diffuse out of animal cells?
Why does carbon dioxide diffuse out of animal cells?
It's a waste product from respiration
Which gas moves into plant leaves during photosynthesis?
Which gas moves into plant leaves during photosynthesis?
Carbon dioxide
What happens when diffusion is complete?
What happens when diffusion is complete?
Particles are evenly spread - equilibrium reached
Which waste product diffuses from cells into blood?
Which waste product diffuses from cells into blood?
Urea