A scientist placed equal masses of living leaf tissue into two containers for 3 hours. Container P was transparent and placed under a lamp. Container Q was opaque and placed beside container P.
No glucose entered or left either container.
| Container | Light reaching the tissue | Mass of glucose at the start in mg | Mass of glucose after 3 hours in mg |
|---|---|---|---|
| P | Yes | 6.0 | 7.8 |
| Q | No | 6.0 | 4.9 |
Explain the results and why the cells in both samples need mitochondria. Refer to chloroplasts and mitochondria in your answer.
282 exam-style questions on AQA GCSE Biology 1.1 Cell structure, covering 1.1.1 Eukaryotes and prokaryotes, 1.1.2 Animal and plant cells, 1.1.3 Cell specialisation, 1.1.4 Cell differentiation, 1.1.5 Microscopy, and 1.1.6 Culturing microorganisms. Each one has a worked solution and a mark scheme showing where the marks go.