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Photosynthesis and ATP Synthesis · CAPE Biology Unit 2

81 past-paper questions on Photosynthesis and ATP Synthesis, part of Bioenergetics and Conservation, from every CAPE Biology Unit 2 paper on Quelpr.

Practise Photosynthesis and ATP Synthesis
  1. 1(a)(i)2 marks· Biology · Unit 2 Q1 1(a)(i)Define the term 'limiting factor'.
  2. 1(a)(i)3 marks· Biology · Unit 2 Q1 1(a)(i)Name the THREE stages of the light-independent reactions that occur in the Calvin cycle, labelled X, Y and Z in Figure 1.
  3. 1(a)(ii)2 marks· Biology · Unit 2 Q1 1(a)(ii)Outline how light intensity is a limiting factor in the process of photosynthesis.
  4. 1(a)(ii)2 marks· Biology · Unit 2 Q1 1(a)(ii)State the functions of reduced NADP+ and ATP in the light-independent reactions.
  5. 1(a)(iii)5 marks· Biology · Unit 2 Q1 1(a)(iii)Outline a suitable procedure for conducting the investigation.
  6. 1(b)(i)2 marks· Biology · Unit 2 Q1 1(b)(i)State a suitable hypothesis for the investigation.
  7. 1(b)(ii)2 marks· Biology · Unit 2 Q1 1(b)(ii)Identify ONE manipulated variable and ONE responding variable in the investigation.
  8. 1(b)(iii)1 mark· Biology · Unit 2 Q1 1(b)(iii)State ONE variable that should be controlled in the investigation.
  9. 1(b)(iv)3 marks· Biology · Unit 2 Q1 1(b)(iv)Explain how growing lettuce in a greenhouse using a hydroponic system can reduce the effects of ONE limiting factor of photosynthesis.
  10. 4(a)(i)4 marks· Biology · Unit 2 Q4 4(a)(i)Discuss the concept of a limiting factor in photosynthesis.
  11. 4(a)(ii)6 marks· Biology · Unit 2 Q4 4(a)(ii)Using your knowledge of the light-dependent and light-independent stages of photosynthesis, explain how light intensity and carbon dioxide act as limiting factors.
  12. 1(a)3 marks· CAPE Biology Unit 2 · 2003 · Paper 1Predict, with reasons, which photosynthetic product of Plant A will contain radioactivity.
  13. 1(b)3 marks· CAPE Biology Unit 2 · 2003 · Paper 1Predict, with reasons, which photosynthetic product of Plant B will contain radioactivity.
  14. 1(c)(i)2 marks· CAPE Biology Unit 2 · 2003 · Paper 1From the graph in Figure 1, describe how the amount of ATP generated by the plant varies with increasing light intensity.
  15. 1(c)(ii)2 marks· CAPE Biology Unit 2 · 2003 · Paper 1State ONE reason why ATP production does not increase indefinitely.
  16. 6(a)(iii)1 mark· CAPE Biology Unit 2 · 2003 · Paper 1State ONE other chemical process occurring in the bananas that is associated with this peak.
  17. 1(a)2 marks· CAPE Biology Unit 2 · 2004 · Paper 2Explain why daily carbon gain in Shorea leprosula is higher in uniform sunlight than in flecked sunlight.
  18. 1(b)(i)1 mark· CAPE Biology Unit 2 · 2004 · Paper 2Determine the difference in daily carbon gain in Shorea leprosula grown in flecked sunshine and uniform sunshine at 350 units of carbon dioxide.
  19. 1(b)(ii)1 mark· CAPE Biology Unit 2 · 2004 · Paper 2Determine the difference in daily carbon gain in Shorea leprosula grown in flecked sunshine and uniform sunshine at 700 units of carbon dioxide.
  20. 1(c)(i)1 mark· CAPE Biology Unit 2 · 2004 · Paper 2Determine the average, MAXIMUM photosynthetic rate of Shorea leprosula at elevated carbon dioxide concentration (700 units).
  21. 1(c)(ii)1 mark· CAPE Biology Unit 2 · 2004 · Paper 2Determine the average, MAXIMUM photosynthetic rate of Shorea leprosula at ambient carbon dioxide concentration.
  22. 1(d)1 mark· CAPE Biology Unit 2 · 2004 · Paper 2Calculate the difference in photosynthetic rate between the elevated and ambient carbon dioxide concentrations in (c)(i) and (ii).
  23. 1(e)2 marks· CAPE Biology Unit 2 · 2004 · Paper 2Explain why the daily carbon gain in Shorea leprosula is higher at 700 units of CO2 than at 350 units of CO2.
  24. 1(f)1 mark· CAPE Biology Unit 2 · 2004 · Paper 2Suggest why carbon gain does not double as CO2 concentration doubles.
  25. 4(a)10 marks· CAPE Biology Unit 2 · 2005 · Paper 2Explain how ATP and NADPH are synthesized in chloroplasts.
  26. 4(b)6 marks· CAPE Biology Unit 2 · 2005 · Paper 2Briefly outline the THREE main processes of the Calvin cycle and discuss why the processes stop in the dark.
  27. 4(c)4 marks· CAPE Biology Unit 2 · 2005 · Paper 2Forty morning glory plants are crowded together in a well-watered pot under a sealed bell jar in full sunshine, while twenty plants grow in a poorly-watered pot in shade under a sealed bell jar with a lizard. Indicate,…
  28. 1(a)1 mark· CAPE Biology Unit 2 · 2006 · Paper 2With reference to the graph in Figure 1, determine which fertilizer regimen gives the HIGHEST yield of rice.
  29. 1(b)1 mark· CAPE Biology Unit 2 · 2006 · Paper 2Calculate the percentage increase in yield when the amount of Azolla is doubled from 7 t to 14 t as the sole fertilizer administered.
  30. 1(c)1 mark· CAPE Biology Unit 2 · 2006 · Paper 2Determine the difference in rice production, in kg ha⁻¹, between a field treated with urea only at 87 kg ha⁻¹ and one treated with both urea at 43.5 kg ha⁻¹ and Azolla at 14 t ha⁻¹.
  31. 1(d)1 mark· CAPE Biology Unit 2 · 2006 · Paper 2Name TWO factors, other than nutrient availability from fertilizer, that would affect rice yield.
  32. 1(g)4 marks· CAPE Biology Unit 2 · 2006 · Paper 2In the box provided, draw and label the cells in region A between the parallel lines shown in Figure 2.
  33. 1(a)5 marks· CAPE Biology Unit 2 · 2007 · Paper 2Explain how the apparatus in Figure 1 can be used to measure the rate of photosynthesis.
  34. 1(b)(i)2 marks· CAPE Biology Unit 2 · 2007 · Paper 2Explain the shape of Curve A.
  35. 1(b)(ii)2 marks· CAPE Biology Unit 2 · 2007 · Paper 2Compare Curves A and B and account for the observed differences.
  36. 1(b)(iii)1 mark· CAPE Biology Unit 2 · 2007 · Paper 2Suggest a possible hypothesis for this experiment.
  37. 4(a)4 marks· CAPE Biology Unit 2 · 2008 (Rest of Region) · Paper 2Describe the structure of thylakoids and explain clearly how they are adapted to their function.
  38. 4(b)4 marks· CAPE Biology Unit 2 · 2008 (Rest of Region) · Paper 2Clarify the pathway and productivity of a ground electron from its entry into Photosystem I to its incorporation into a reduced phosphate-containing product.
  39. 1(a)(i)4 marks· CAPE Biology Unit 2 · 2010 · Paper 2In the space provided, make an annotated schematic drawing of a chloroplast.
  40. 1(a)(ii)4 marks· CAPE Biology Unit 2 · 2010 · Paper 2Identify and describe the TWO parts of the chloroplast that are important in the process of photosynthesis.
  41. 4(b)3 marks· CAPE Biology Unit 2 · 2010 · Paper 2Explain the role of chlorophyll in photosynthesis.
  42. 4(c)4 marks· CAPE Biology Unit 2 · 2010 · Paper 2Comment on the significance of ATP and NADPH2 in photosynthesis.
  43. Q11 mark · multiple choice· CAPE Biology Unit 2 · 2011 · Paper 1Item 1 refers to the following diagram which represents a chloroplast. Ribulose biphosphate carboxylase can be found in Region
  44. Q21 mark · multiple choice· CAPE Biology Unit 2 · 2011 · Paper 1The electrons from non-cyclic photophosphorylation pass into the Calvin Cycle via
  45. Q31 mark · multiple choice· CAPE Biology Unit 2 · 2011 · Paper 1Item 3 refers to the reaction scheme below which shows the dark reaction pathway of the Calvin Cycle occurring for about 20 seconds. Which of the following correctly identifies the compounds, X and Y?
  46. Q41 mark · multiple choice· CAPE Biology Unit 2 · 2011 · Paper 1The yield of greenhouse crops is higher than that of field crops, due to increased photosynthetic activity by the plants. Which of the following factors may contribute to this? I. Constant application of farmyard manure…
  47. 1(a)(i)4 marks· CAPE Biology Unit 2 · 2011 · Paper 2Identify the structures labelled A, B, C, and D in Figure 1.
  48. 1(a)(ii)5 marks· CAPE Biology Unit 2 · 2011 · Paper 2Make a detailed drawing showing the cellular organization of the region highlighted by Box X in Figure 1, at two times the actual size of Box X (no labels required).
  49. 1(a)(iii)1 mark· CAPE Biology Unit 2 · 2011 · Paper 2Given that the photomicrograph in Figure 1 is magnified 150 times, calculate the actual width of the specimen from Y1 to Y2.
  50. 4(a)3 marks· CAPE Biology Unit 2 · 2011 · Paper 2Define the term 'phosphorylation' and distinguish between photophosphorylation and oxidative phosphorylation.
  51. 4(b)4 marks· CAPE Biology Unit 2 · 2011 · Paper 2Discuss TWO similarities and TWO differences between the chemical reactions which occur during photophosphorylation and oxidative phosphorylation.
  52. Q11 mark · multiple choice· CAPE Biology Unit 2 · 2012 · Paper 1Ribulose biphosphate carboxylase can be found in region
  53. Q21 mark · multiple choice· CAPE Biology Unit 2 · 2012 · Paper 1Which of the stages labelled I - IV on the diagram represents the stage at which carbon dioxide is incorporated into the cycle?
  54. Q31 mark · multiple choice· CAPE Biology Unit 2 · 2012 · Paper 1Which of the following combinations correctly describes the MAIN factors affecting the rate of photosynthesis? I. Light intensity and temperature II. Carbon dioxide concentration and state of the stomata III. NAD and…
  55. Q41 mark · multiple choice· CAPE Biology Unit 2 · 2012 · Paper 1The yield of greenhouse crops is higher than that of field crops, due to increased photosynthetic activity by the plants. Which of the following factors may contribute to this? I. Constant application of farmyard…
  56. Q51 mark · multiple choice· CAPE Biology Unit 2 · 2012 · Paper 1Which of the following correctly identifies the regions labelled P and Q?
  57. 1(a)(i)a)1.5 marks· CAPE Biology Unit 2 · 2012 · Paper 2On Figure 1, use a labelled arrow to indicate the stages at which ATP is used and ADP released, including the number of molecules involved.
  58. 1(a)(i)b)1.5 marks· CAPE Biology Unit 2 · 2012 · Paper 2On Figure 1, use a labelled arrow to indicate the stage at which NADPH is used and NADP+ released, including the number of molecules involved.
  59. 1(a)(ii)3 marks· CAPE Biology Unit 2 · 2012 · Paper 2Outline the MAIN purpose of EACH of the three main phases of the Calvin cycle shown by the pie sections in Figure 1: - First phase - Second phase - Third phase
  60. Q11 mark · multiple choice· CAPE Biology Unit 2 · 2013 · Paper 1Item 1 refers to the following diagram which shows the structure of a chloroplast. The photosystems are located in the structure labelled
  61. Q21 mark · multiple choice· CAPE Biology Unit 2 · 2013 · Paper 1The role of the antenna complex in Photosystems I and II is to
  62. Q31 mark · multiple choice· CAPE Biology Unit 2 · 2013 · Paper 1Item 3 refers to the following diagram which outlines the events of the Calvin cycle. Which of the following correctly identifies the compounds, X and Y?
  63. Q41 mark · multiple choice· CAPE Biology Unit 2 · 2013 · Paper 1The yield of greenhouse crops is higher than that of field crops, due to increased photosynthetic activity by the plants. Which of the following factors MOST likely contribute to this? I. Constant application of…
  64. 1(c)(i)2 marks· CAPE Biology Unit 2 · 2013 · Paper 2Use labelled double-headed arrows (↔) directly on the graph in Figure 3 to indicate the region where: a) light is a limiting factor b) other factors become limiting.
  65. 1(c)(ii)2 marks· CAPE Biology Unit 2 · 2013 · Paper 2Explain the significance of points D and E on the axes of the graph in Figure 3.
  66. Q11 mark · multiple choice· CAPE Biology Unit 2 · 2014 · Paper 1The photosystems are located in which of the structures labelled I to IV?
  67. Q21 mark · multiple choice· CAPE Biology Unit 2 · 2014 · Paper 1The role of the antenna complex in Photosystems I and II is to
  68. Q31 mark · multiple choice· CAPE Biology Unit 2 · 2014 · Paper 1Which of the following occur in the Calvin cycle?
  69. Q41 mark · multiple choice· CAPE Biology Unit 2 · 2014 · Paper 1At which of the stages labelled I, II, III and IV would light be a limiting factor?
  70. 1(b)(i)3 marks· CAPE Biology Unit 2 · 2014 · Paper 2Describe the relationship between leaf temperature and net photosynthetic rate at 1935 ppm CO2.
  71. 1(b)(ii)3 marks· CAPE Biology Unit 2 · 2014 · Paper 2With reference to data presented in Figure 2, explain the effect of the increase in CO2 concentration on the rate of photosynthesis, taking into consideration the temperature of the leaf.
  72. 1(b)(iii)4 marks· CAPE Biology Unit 2 · 2014 · Paper 2Briefly comment on how an understanding of temperature and carbon dioxide, as limiting factors of photosynthesis, may be used by farmers to increase crop yield in greenhouses.
  73. Q21 mark · multiple choice· CAPE Biology Unit 2 · 2015 · Paper 1Which of the following are products of photophosphorylation? I. ATP II. ADP III. NADP IV. NADPH
  74. Q31 mark · multiple choice· CAPE Biology Unit 2 · 2015 · Paper 1Which of the following correctly identifies the compounds, X and Y?
  75. Q41 mark · multiple choice· CAPE Biology Unit 2 · 2015 · Paper 1On a warm, sunny day, photosynthesis is limited by
  76. 1(a)(i)2 marks· CAPE Biology Unit 2 · 2015 · Paper 2Describe the observed effects of light intensity on the photosynthesis rate of this species in regions A and B.
  77. 1(a)(ii)2 marks· CAPE Biology Unit 2 · 2015 · Paper 2Outline the biological process by which O2 is produced during photosynthesis.
  78. 1(a)(i)4 marks· CAPE Biology Unit 2 · 2016 · Paper 2Complete the drawing in Figure 1 to accurately show palisade cells and a vascular bundle.
  79. 1(a)(ii)4 marks· CAPE Biology Unit 2 · 2016 · Paper 2Use annotated labels to identify and describe the cells labelled I and II in the spaces provided next to Figure 1.
  80. 1(b)(i)4 marks· CAPE Biology Unit 2 · 2018 · Paper 2On the grid provided on page 7, plot a line graph based on the data provided in Table 1.
  81. 1(b)(ii)3 marks· CAPE Biology Unit 2 · 2018 · Paper 2Using the concept of limiting factors, suggest THREE reasons for the shape of the graph drawn in b (i).

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