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1 markTransport Systems and Locomotion

CSEC Integrated Science · May/June 2012 · Paper 2 · Question 3(b)(i)

Sammy and James rested then started running across a playing field. Their heart rates over time are shown in Figure 4.

Using the graph in Figure 4, describe the general trend in the heart rate of the boys with time.

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Other parts of this question

  1. 3(a)(i)Identify the structures labelled Q, R, S, and T. Write your answers in the spaces provided.[4 marks]
  2. 3(a)(ii)State the MAJOR function of the heart.[1 mark]
  3. 3(b)(ii)Determine Sammy's heart rate at 150 seconds.[1 mark]
  4. 3(b)(iii)What is the maximum heart rate experienced by James?[1 mark]
  5. 3(b)(iv)Suggest TWO reasons for the change in heart rate of the boys between 0 and 30 seconds.[2 marks]
  6. 3(c)(i)How would Sammy's rib cage move, as he runs back and forth?[1 mark]
  7. 3(c)(ii)How would Sammy's body benefit from the movement described in (c)(i) above?[1 mark]
  8. 3(d)(i)Describe TWO possible side effects that the smoke may have on their respiratory system.[2 marks]
  9. 3(d)(ii)State ONE negative effect of the gardener's action on the physical environment.[1 mark]

More practice: the rest of this paper · more Transport Systems and Locomotion questions · all CSEC Integrated Science past papers