Put a tick (✓) in the box next to the process that occurs in anaerobic respiration but does not occur in aerobic respiration.

☐ Formation of acetyl coenzyme A from pyruvate

☐ Reduction of NAD

☐ Reduction of pyruvate

☐ Oxidation of triose phosphate

During the 48 hours, the coloured liquid moved to the left.

Explain why.

Apart from time, give two measurements the student would have to make to determine the rate of aerobic respiration of these seeds in cm3 hour–1

1

2

The student used the same apparatus to determine the volume of carbon dioxide the seeds produced during 48 hours.

Give the change the student would need to make to the contents of the apparatus and describe how he could calculate the volume of carbon dioxide produced.

The student calculated that during the 48 hours, 6.2 × 10–4 cm3 of oxygen was absorbed by 40 g of seeds.

Calculate the oxygen uptake in cm3 g–1 hour–1