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EnglandBiologyQuick questions
Topic 1: Molecules, diet, transport and health
Quick questions on Gas exchange and cell transport: membranes, diffusion and osmosis - Edexcel A-Level Biology B
2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is q1?Show answer
Explain why oxygen can diffuse directly through the phospholipid bilayer but glucose cannot. [2 marks]
What is q2?Show answer
State two ways an exchange surface is adapted for rapid diffusion. [2 marks]
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