During an operation, the blood flow to a small area of leg muscle is temporarily reduced. Glucose remains available to the muscle cells throughout.
| Condition | Oxygen reaching the muscle cells | ATP yield from each glucose molecule | Lactic acid concentration |
|---|---|---|---|
| A: normal blood flow | Enough | Large | Does not increase |
| B: reduced blood flow | Not enough | Small | Increases |
Name the type of respiration responsible for the large ATP yield in condition A.
Name the type of respiration responsible for the increase in lactic acid in condition B.
Explain why the ATP yield from each glucose molecule is smaller in condition B than in condition A.
Name the part of a muscle cell in which anaerobic respiration takes place.
92 exam-style questions on AQA GCSE Biology 4.2 Respiration, covering 4.2.1 Aerobic and anaerobic respiration, 4.2.2 Response to exercise, and 4.2.3 Metabolism. Each one has a worked solution and a mark scheme showing where the marks go.