Diffusion (OCR GCSE Biology A (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
In which direction do particles move during diffusion?
In which direction do particles move during diffusion?
From higher to lower concentration
Does diffusion require energy from the cell?
Does diffusion require energy from the cell?
No, it is passive transport
What is a concentration gradient?
What is a concentration gradient?
A difference in concentration across space
Which gases diffuse easily across cell membranes?
Which gases diffuse easily across cell membranes?
Oxygen and carbon dioxide
What happens to particles during diffusion?
What happens to particles during diffusion?
They become evenly spread out
Which nutrient diffuses from the gut into the blood in the small intestine?
Which nutrient diffuses from the gut into the blood in the small intestine?
Glucose
What may ions like sodium and potassium require to diffuse through cell membranes?
What may ions like sodium and potassium require to diffuse through cell membranes?
Specific channels
Where does oxygen diffuse from in the lungs?
Where does oxygen diffuse from in the lungs?
Alveoli into blood
Why does carbon dioxide diffuse from blood into alveoli?
Why does carbon dioxide diffuse from blood into alveoli?
Concentration is higher in blood
What does diffusion help maintain in biological systems?
What does diffusion help maintain in biological systems?
Homeostasis