(a(i))[1]
From Fig. 5.1, state the time during the race when the blood lactic acid concentration is 4.8 mmol per dm$^3$.
(a(ii))[2]
Using Fig. 5.1, calculate how much the blood lactic acid concentration rises from 0 seconds to 20 seconds.
(a(iii))[1]
Tick one statement that agrees with the data in Fig. 5.1.
(b)[3]
Complete the statements about aerobic respiration.
(c)[3]
Respiration releases energy. State three uses of this energy in living organisms.