Photosynthesis is the process by which plants and other organisms use sunlight, carbon dioxide, and water to produce oxygen and energy in the form of glucose or other energy-rich organic compounds. It takes place in two main stages - the light-dependent reactions and the light-independent reactions. The light-dependent reactions use energy from sunlight to produce ATP and NADPH using chlorophyll. The light-independent reactions, also called the Calvin cycle, use ATP and NADPH to fix carbon from carbon dioxide into organic molecules like glucose. Chloroplasts are the organelles where photosynthesis takes place.

1. Photosynthesis Practice

2. An organism that obtains its energy from the
foods it eats is a (an)

3. Heterotroph

4. During the ______________ of
photosynthesis, energy from sunlight is
used to form ATP, NADPH, and oxygen.

5. Light dependent
reaction

6. The Light-dependent reactions of
photosynthesis take place in the
________ membranes of chloroplast

7. Thylakoid

8. The Stage of Photosynthesis that uses ATP
and NADPH to form high-energy sugars is
the ___________

9. Calvin cycle

10. A plant or other organism that is able to
make its own food is a(an)

11. Autotroph

12. _________________ is the overall process
in which sunlight is used to convert carbon
dioxide and water into oxygen and high-
energy sugars

13. Photosynthesis

14. The region of the chloroplast in which the
Calvin Cycle Occurs is the

15. Stroma

16. Molecules that absorbs light

17. Chlorophyll a, chlorphyll
b, carotenoids

18. Produces oxygen gas and converts ADP to
ATP

19. Light dependent
reactions

20. Allows CO2 and O2 to move in and out of the
plant

21. Stomata

22. The splitting of water molecules is essential
for the photosynthetic production of

23. NADPH

24. In a reduction reaction,

25. Hydrogen atom are
gained

26. What two energy carrying molecules are
produced by the light reactions of
photosynthesis?

27. ATP and NADPH

28. The region outside the thylakoid membranes

29. Stroma

30. Process by which autotrophs use sunlight to
make high-energy sugars

31. Photosynthesis

33. 16 – light
17 – H2O
18 – CO2
19 – O2
20 – G3P – CH2O - carbohydrates

34. In an oxidation reaction,

35. Hydrogen atoms are
lost

36. The organelle where photosynthesis
occurs?

37. Chloroplast

38. True or False: Cells that do photosynthesis
DO NOT do cellular respiration

39. False

40. The light reactions of photosynthesis take
place in the

41. Thylakoid

42. The Calvin cycle of photosynthesis take
place in the

43. Stroma

44. Photosynthesis takes place in which
organelle?

45. Chloroplast

46. Molecule found inside the thylakoid layer

47. Chlorophyll

48. What products of the light dependent
reactions are used during the light
independent reactions

49. ATP and NADPH

50. What bi-product of photosynthesis is
unimportant to the plant but quite
important to people?

51. Oxygen

52. The overall goal of photosynthesis is to
produce what?

53. Glucose/G3P/carbohydrate

54. Excited electrons bounce down an electron
transport chain resulting in the production
of this.

55. ATP

56. What input into the Calvin cycle is not a
product of the light dependent reactions?

57. CO2

58. Light-dependent reactions require.

59. Light

60. The light independent reactions contain
mostly this cycle

61. Calvin cycle

62. Plants are green because they absorb all
wavelengths of light except those in the
_______________ range.

63. Green

64. During the photosynthetic reactions,
________ is oxidized and _______ is
reduced.

65. H2O; CO2

66. Ribulose 1, 5-bisphophate (RuBP) is
regenerated from:

67. G3P

68. The oxygen produced during photosynthesis
comes from:

69. H2O

70. Chlorophyll can be found attached to the
___________ membrane.

71. Thylakoid

72. Carbon dioxide (CO2) enters leaves through
openings called:

73. Stomata

74. During the Calvin Cycle, _________ and
_________ are needed to carry out the
reactions that convert CO2 into a
carbohydrate.

75. ATP and NADPH

76. Which wavelength of visible light has the
greatest energy content?

77. Violet

78. The oxygen produced during photosynthesis
comes from:

79. H2O

80. The first phase of the Calvin cycle is:

81. CO2 fixation

82. The enzyme that catalyses the fixation of
CO2 is called:

83. RuBP

84. What molecules are potential product of
glyceraldehyde 3-phosphate (G3P)?

85. RuBP/glucose/starch/cellulose