Cellular respiration is a vital metabolic process in all living organisms.
Write the balanced chemical symbol equation for aerobic respiration.
Explain how the rate of respiration in yeast cells suspended in a culture medium is affected by changes to abiotic (non-living) factors.
Heavily compacted agricultural soil severely restricts the diffusion of oxygen to plant roots. Explain how this soil compaction can lead to stunted growth and yellowing of the leaves (chlorosis) in crops.
10 exam-style questions on Edexcel IGCSE Biology Respiration. Each one has a worked solution and a mark scheme showing where the marks go.