Sciences Co-ordinated 9-1 0973: B10 - Gas exchange and respiration Topical Past Paper Questions

Coordination of the body involves reflex arcs and reflex actions. Figure 1.1 shows a reflex arc. Figure 1.1 (a) (i) The spinal cord is part of the central nervous system. State the other organ in the central nervous system. (ii) Complete the flow chart, using letters $ \mathbf{P}…

(a) Fig. 2.1 is a diagram of the breathing system in humans. Fig. 2.1 (i) On Fig. 2.1: draw a label line and letter L to identify the larynx draw a label line and letter B to identify a bronchus. (ii) Describe two features of the gas exchange surface in humans. 1 .....2 (b) (i) S…

(a) A student monitors their heart rate during vigorous exercise for 30 minutes. Their heart rate is measured in beats per minute (bpm). Fig. 4.1 is a graph of the results. time/minutes Fig. 4.1 Complete the sentences to describe and explain the results in Fig. 4.1. During exerci…