(a(i))[2]
Describe two features, seen in Fig. 3.1 and Fig. 3.2, that indicate this blood vessel is a vein.
(a(ii))[1]
Draw an arrow on Fig. 3.2 to indicate the direction of blood flow in this vein.
(b(i))[2]
Suggest a method the students could use to measure their pulse rates.
(b(ii))[1]
Calculate the mean resting pulse rate for the three students in group A.
(b(iii))[1]
State the effect running has on the pulse rate using the information in Fig. 3.3.
(b(iv))[1]
State which student showed the greatest change in pulse rate after running.
(b(v))[2]
Describe two ways in which the data for group A and group B differ in Fig. 3.3.
(c)[2]
Predict and describe the changes that would happen to the students’ breathing during the investigation.