(a(i))[1]
State the word equation for anaerobic respiration in humans.
(a(ii))[3]
Compare anaerobic respiration with aerobic respiration in human muscle cells.
(b(i))[2]
Breathing rate rises during the race because the body detects a change. Identify the stimulus in this response and state the organ that detects the stimulus.
(b(ii))[2]
Using the data in Fig. 4.1, calculate the rate at which heart rate decreases from 125 seconds to 260 seconds as the athlete recovers.
(b(iii))[6]
Explain the results shown in Fig. 4.1 from 60 seconds until 420 seconds.