Cells lining the small intestine absorb glucose into the blood. In one situation, the glucose concentration in the blood is higher than the glucose concentration in the small intestine.
Give the name of the process that moves glucose into the blood in this situation.
Give the source of the energy used in this process.
A scientist measured the rate at which glucose moved across tissue from the lining of the small intestine.
The glucose concentration was higher on the blood side of the tissue than on the gut side.
| Condition | Rate of glucose movement from the gut side to the blood side in µmol per cm² per minute |
|---|---|
| Respiration allowed | 0.80 |
| Respiration inhibited | 0.10 |
Explain how these results support your answer to part (a).
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.