Kidney tubules reabsorb glucose so that it is not lost in the urine. At one point in a kidney tubule, the glucose concentration is 2.0 mmol/dm³ in the tubule fluid and 5.0 mmol/dm³ in the blood.
Explain how glucose can move from the tubule fluid into the blood.
140 exam-style questions on AQA GCSE Biology 1.3 Transport in cells, covering 1.3.1 Diffusion, 1.3.2 Osmosis, and 1.3.3 Active transport. Each one has a worked solution and a mark scheme showing where the marks go.