Respiration · CSEC Biology

65 past-paper questions on Respiration, part of Life Processes and Disease, from every CSEC Biology paper on Quelpr.

1. 1(a)(i)4 marks· Biology Q1 1(a)(i)Complete Figure 1 by identifying the materials that EACH jar should contain.
2. 1(a)(ii)2 marks· Biology Q1 1(a)(ii)A gill from one of the fish is shown in Figure 2. Annotate Figure 2 to illustrate TWO characteristics that make the gill suitable for gaseous exchange.
3. 1(a)(ii)1 mark· Biology Q1 1(a)(ii)What is the expected observation in Jar IV?
4. 1(a)(iii)2 marks· Biology Q1 1(a)(iii)State TWO reasons why gaseous exchange is important in living organisms.
5. 1(b)(i)2 marks· Biology Q1 1(b)(i)Describe how the apparatus in Figure 1 is modified to test the hypothesis that plants produce carbon dioxide during aerobic respiration.
6. 1(b)(ii)2 marks· Biology Q1 1(b)(ii)Explain the function of the black cloth in the experiment.
7. 1(b)(iii)2 marks· Biology Q1 1(b)(iii)Suggest TWO precautions that should be taken when conducting this experiment.
8. 1(c)(i)2 marks· Biology Q1 1(c)(i)Write a chemical equation to summarize aerobic respiration.
9. 1(c)(ii)2 marks· Biology Q1 1(c)(ii)Explain the importance of aerobic respiration to living organisms.
10. 1(d)3 marks· Biology Q1 1(d)Humans also carry out other functions similar to that shown by the plant species represented at Figure 1, for example, respiration. In investigating respiration in a human being and a plant, explain how you would…
11. 1(d)2 marks· Biology Q1 1(d)In certain microorganisms, respiration occurs anaerobically. State the end products of anaerobic respiration.
12. 2(a)6 marks· Biology Q2 2(a)Identify ONE tube in which, after one hour, the colour of the hydrogen carbonate indicator becomes yellow and ONE in which the solution becomes purple. In each case explain your answer.
13. 2(a)(i)1 mark· Biology Q2 2(a)(i)Suggest ONE reason why humans need oxygen to stay alive.
14. 2(a)(i)4 marks· Biology Q2 2(a)(i)Label the structures involved in breathing in Figure 2a above.
15. 2(a)(i)4 marks· Biology Q2 2(a)(i)Name the structures labelled P, Q, R and S in Figure 3.
16. 2(a)(ii)2 marks· Biology Q2 2(a)(ii)Write a chemical equation which summarizes the process for which oxygen is required in living cells.
17. 2(a)(ii)1 mark· Biology Q2 2(a)(ii)Add a line to Figure 2a to show the position of the diaphragm when breathing in.
18. 2(a)(ii)2 marks· Biology Q2 2(a)(ii)Identify the gases indicated by the arrows, A and B, in Figure 3.
19. 2(a)(iii)1 mark· Biology Q2 2(a)(iii)Name the process at (a) (ii) above.
20. 2(a)(iii)1 mark· Biology Q2 2(a)(iii)State what is happening to the rib cage at the same time that the diaphragm is moving to the position you have shown in (a)(ii).
21. 2(b)(i)2 marks· Biology Q2 2(b)(i)Draw ONE conclusion based on the graph.
22. 2(b)(i)1 mark· Biology Q2 2(b)(i)Indicate with an 'X' on Figure 2a, where the structures shown in Figure 2b are found.
23. 2(b)(i)3 marks· Biology Q2 2(b)(i)During his spectacular sprint, Usain Bolt's muscle cells became starved of oxygen. Explain why this happens in exercising muscles.
24. 2(b)(ii)2 marks· Biology Q2 2(b)(ii)Write a chemical equation and a word equation to summarize EACH of the following processes: Aerobic respiration
25. 2(b)(ii)1 mark· Biology Q2 2(b)(ii)Identify ONE feature illustrated in the diagram which shows that the alveolus is suitable for gaseous exchange.
26. 2(b)(ii)2 marks· Biology Q2 2(b)(ii)Suggest TWO reasons why smoking may contribute to heart disease.
27. 2(b)(ii)1 mark· Biology Q2 2(b)(ii)What substance is produced in Bolt's muscles which were starved of oxygen?
28. 2(b)(iii)2 marks· Biology Q2 2(b)(iii)Explain how the substance in (b) (ii) above could affect Bolt's performance if he continued running for another 10 minutes.
29. 2(c)2 marks· Biology Q2 2(c)What is the role of breathing in the movement of the gases illustrated in Figure 3?
30. 2(c)(i)3 marks· Biology Q2 2(c)(i)Why are breathing and respiration BOTH important to mammals?
31. 2(c)(i)1 mark· Biology Q2 2(c)(i)Some plant species are able to survive in conditions where oxygen is lacking. Name the process by which these plants get their energy.
32. 2(c)(ii)2 marks· Biology Q2 2(c)(ii)Suggest ONE reason why plants do not need to breathe although respiration is important to them also.
33. 2(c)(ii)3 marks· Biology Q2 2(c)(ii)Describe the process named in (c) (i) above and state TWO substances produced by this process.
34. 2(d)2 marks· Biology Q2 2(d)A person who is exercising vigorously breathes more deeply and rapidly than someone who is resting. Give TWO reasons why this is necessary.
35. 2(e)3 marks· Biology Q2 2(e)Explain how cigarette smoking can reduce the efficiency of the lungs.
36. 3(a)4 marks· Biology Q3 3(a)Label, on the diagram, the FOUR structures that are directly involved in breathing.
37. 3(a)(i)4 marks· Biology Q3 3(a)(i)Name the structures labelled I, II, III and IV in Figure 2.
38. 3(a)(ii)2 marks· Biology Q3 3(a)(ii)State the function of EACH of the parts labelled II and IV in Figure 2.
39. 3(b)4 marks· Biology Q3 3(b)State how any THREE of the structures labelled in (a) function in breathing during inhalation.
40. 3(b)(i)2 marks· Biology Q3 3(b)(i)State TWO ways in which the appearance of the lung of a smoker differs from that of a non-smoker.
41. 3(c)4 marks· Biology Q3 3(c)Explain how any TWO features of the human lung make it an efficient respiratory surface.
42. 3(d)4 marks· Biology Q3 3(d)Breathing rate can be affected by several factors. Explain how exercise and smoking may affect a person's breathing rate.
43. 4(a)9 marks· Biology Q4 4(a)Describe how oxygen in the atmosphere becomes available to human blood for delivery to the cells, and explain how this process differs from the way plant cells obtain oxygen for respiration.
44. 4(a)6 marks· Biology Q4 4(a)Name the parts labelled A, B, C, D, E and F in the space provided.
45. 4(a)(i)2 marks· Biology Q4 4(a)(i)Name the structures responsible for gaseous exchange in humans and in fish.
46. 4(a)(ii)3 marks· Biology Q4 4(a)(ii)Identify THREE features that the structures named in (i) above have in common.
47. 4(b)6 marks· Biology Q4 4(b)Suggest SIX reasons why humans who smoke heavily have less oxygen available to the cells for respiration.
48. 4(b)4 marks· Biology Q4 4(b)State TWO characteristics that the respiratory surface used for gaseous exchange in human beings has in common with the respiratory surface used in flowering plants. Explain how EACH characteristic makes the respiratory…
49. 4(b)(i)3 marks· Biology Q4 4(b)(i)Draw and annotate a diagram to show how oxygen and carbon dioxide are exchanged across the respiratory surface of a human.
50. 4(b)(i)4 marks· Biology Q4 4(b)(i)Give TWO characteristics of aerobic respiration.
51. 4(b)(ii)4 marks· Biology Q4 4(b)(ii)In the absence of sufficient oxygen, anaerobic respiration occurs. Suggest ONE disadvantage of anaerobic respiration.
52. 4(b)(ii)a)1 mark· Biology Q4 4(b)(ii)a)Name the process by which gases are exchanged in plants.
53. 4(b)(ii)b)3 marks· Biology Q4 4(b)(ii)b)Explain why in plants there is a difference in the percentage of the respiratory gases exchanged during the day compared with the percentage exchanged during the night.
54. 4(c)(i)3 marks· Biology Q4 4(c)(i)Outline the effects of THREE named components of cigarette smoke, other than nicotine, on the human body.
55. 4(c)(ii)2 marks· Biology Q4 4(c)(ii)Outline TWO ways in which the use of nicotine in electronic cigarettes may be harmful to the human body.
56. 5(a)(i)9 marks· Biology Q5 5(a)(i)With the aid of a fully annotated diagram, explain how air reaches the lungs and oxygen is absorbed into the blood stream.
57. 5(a)(i)1 mark· Biology Q5 5(a)(i)Water passes over the gill rakers before passing over the filaments. Suggest the function of the gill rakers.
58. 5(a)(i)6 marks· Biology Q5 5(a)(i)Describe the process of respiration in living cells.
59. 5(a)(ii)1 mark· Biology Q5 5(a)(ii)Identify ONE feature observed in Figure 5 that allows the filaments to function efficiently.
60. 5(a)(iii)1 mark· Biology Q5 5(a)(iii)State ONE OTHER characteristic of the filaments that helps in their function.
61. 5(b)4 marks· Biology Q5 5(b)The effect of smoke emission from factories on plant leaves is sometimes compared to the effect of cigarette smoke on human lungs. Suggest TWO reasons why this comparison is appropriate.
62. 5(b)(i)4 marks· Biology Q5 5(b)(i)Identify TWO structures in the breathing apparatus of humans that have similar functions to the parts of the gills illustrated in Figure 5.
63. 5(c)2 marks· Biology Q5 5(c)Many governments have passed legislation to reduce the amount of cigarette smoking in public. Explain why governments should consider it their responsibility to reduce smoking in public.
64. 5(c)3 marks· Biology Q5 5(c)State THREE ways in which the lungs of a smoker may be affected by the smoking habit.
65. 1(c)(i)1 mark· CSEC Biology · May/June 2021 · Paper 2Suggest one way in which the leaf is adapted for gaseous exchange.