Transport in Cells (OCR GCSE Biology A, Combined (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
In diffusion, which direction do particles move?
In diffusion, which direction do particles move?
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
What causes particles to move during diffusion?
What causes particles to move during diffusion?
Random motion of particles
Which gases are named as diffusing easily across cell membranes?
Which gases are named as diffusing easily across cell membranes?
Oxygen and carbon dioxide
Which small molecules dissolved in water can diffuse through membranes?
Which small molecules dissolved in water can diffuse through membranes?
Glucose and amino acids
What may ions like sodium and potassium require to diffuse through membranes?
What may ions like sodium and potassium require to diffuse through membranes?
Specific channels
Where does oxygen diffuse from in the lungs?
Where does oxygen diffuse from in the lungs?
Alveoli into the blood
In which direction does carbon dioxide diffuse in the lungs?
In which direction does carbon dioxide diffuse in the lungs?
From blood into alveoli
Where does glucose diffuse in the small intestine?
Where does glucose diffuse in the small intestine?
From gut into blood
What is homeostasis?
What is homeostasis?
Stable internal conditions for life
What is the final result of diffusion?
What is the final result of diffusion?
Particles evenly spread out