This question is about aerobic and anaerobic respiration.
During anaerobic respiration in yeast cells, pyruvate is decarboxylated and reduced. What are the final end-products of this metabolic pathway?
Why is oxygen needed by cells during aerobic respiration?
In which region of a mitochondrion does the electron transport chain take place?
Describe how you would use a respirometer to measure the rate of oxygen consumption in a sample of active woodlice, and state one safety precaution you would take with its reason when preparing the apparatus.
51 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.