1st Year Biology Chapter 11 Bioenergetics MCQs Short Questions Notes

biology 11th notes Chapter 11

1. Match haem group of haemoglobin with one of the following:

 
 
 
 

2. Which of the following compounds is formed during aerobic reaction?

 
 
 
 

3. Biological energy transformation:

 
 
 
 

4. The compensation point is a point when:

 
 
 
 

5. Which of the followings in not an accessory pigment?

 
 
 
 

6. Which of the followings is tail of the chlorophyll molecule b?

 
 
 
 

7. Which of the following is electron acceptor during light reaction of photosynthesis?

 
 
 
 

8. The difference between photosynthesis and respiration is:

 
 
 
 

9. Air contains 0.03 — 0.04 percent of:

 
 
 
 

10. Haeme portion of haemoglobin contains:

 
 
 
 

11. Which of the followings is the end product of oxidative phase of glycolysis?

 
 
 
 

12. The photosynthesis carried out by the terrestrial plants is:

 
 
 
 

13. Chlorophyll absorbs light energy, which is converted into chemical energy of:

 
 
 
 

14. When does the rate of photosynthesis and respiration become equal?

 
 
 
 

15. The energy capturing process is:

 
 
 
 

16. ATP is synthesized during chemiosmosis in:

 
 
 
 

17. Which of the following is the end product of calvin cycle?

 
 
 
 

18. Which of the followings is not the accessory pigment?

 
 
 
 

19. Lactic acid form of anaeroblic respiration:

 
 
 
 

20. Rubisco is:

 
 
 
 

21. The biologist who gave the hypothesis that plant spilt water and release water was:

 
 
 
 

22. The plants appear green because:

 
 
 
 

23. Which of the following processes takes place in the presence and absence of oxygen?

 
 
 
 

24. The G3P molecules formed during Calvin cycle are:

 
 
 
 

25. Pyruvic acid:

 
 
 
 

26. Which of the following mechanism is involved in the synthesis of ATP?

 
 
 
 

27. The photosynthesis carried out by the aquatic plants is:

 
 
 
 

28. Chlorophyll is present in:

 
 
 
 

29. CoA:

 
 
 
 

30. In which reaction free energy is not required?

 
 
 
 

31. The absorption spectrum of light is maximum in the wavelength of:

 
 
 
 

32. How much Glucose is converted into ATP during anaerobic reaction?

 
 
 
 

33. Match rubisco with one of the followings:

 
 
 
 

34. Which of the following reactions take place during fatigue in the muscle of man?

 
 
 
 

35. Choroplast has membrane envelop.

 
 
 
 

36. During respiratory chain, coenzyme Q is reduced by:

 
 
 
 

37. Which of the followings is the smallest unit?

 
 
 
 

38. Which of the following electron acceptors is oxidized by an atom of oxygen?

 
 
 
 

39. The quantitative study of energy relationship in the biological system is called:

 
 
 
 

40. Which of the following components of the photo system has chlorophyll b molecules?

 
 
 
 

41. The leaves of the plants become yellow due to deficiency of:

 
 
 
 

42. The mechanism for ATP synthesis is:

 
 
 
 

43. Which of the following processes is not oxidation reduction reaction?

 
 
 
 

44. Visible light ranges from about 380 to how many nm in wavelength?

 
 
 
 

45. Carbon fixation refers to the initial incorporation of:

 
 
 
 

46. They pigment with red colour is:

 
 
 
 

47. Photosystem 1 absorbs which of the following lights?

 
 
 
 

48. The oxidation of which of the following molecules produce FADH₂ during Krebs cycle?

 
 
 
 

49. The oxidation of which of the following molecules takes place during photosynthesis?

 
 
 
 

50. Pyruvic acid is produced as a result of:

 
 
 
 

51. The energy releasing process is:

 
 
 
 

52. Each consist of light gathering antenna complex and a reaction center.

 
 
 
 

53. Which of the following is the most important factor for photosynthesis?

 
 
 
 

54. Which of the followings take part directly in the photosynthetic reactions?

 
 
 
 

55. The splitting of water and release of oxygen during light reaction is called:

 
 
 
 

56. The removal of hydrogen is controlled by an enzyme called:

 
 
 
 

57. The oxidation of which of the following molecule produce oxalocatate during krebs cycle.

 
 
 
 

58. Which of the followings is irrelevant?

 
 
 
 

59. Cytochromes:

 
 
 
 

60. Photosystem 11 absorbs which of the following lights?

 
 
 
 

61. Stroma is fluid in the chloroplast which surrounds the:

 
 
 
 

62. Which is a kind of chemical link between catabolism and anabolism?

 
 
 
 

63. Krebs cycle takes place in:

 
 
 
 

64. Oxygen released during photosynthesis comes from:

 
 
 
 

65. The reduction of which of the following molecules takes place during photosynthesis?

 
 
 
 

66. Which of the following processes does not take place during chemiosmosis?

 
 
 
 

67. Which of the followings is not reactant in photosynthesis?

 
 
 
 

68. Which of the following reaction is included in the oxidative phase of glycolysis?

 
 
 
 

69. Which of the following chlorophylls is present in bacteria?

 
 
 
 

70. Chlorophylls are present in the:

 
 
 
 

71. The source of oxygen during photosynthesis is:

 
 
 
 

72. Which of the following reactions does not take place in animals?

 
 
 
 

73. How many net ATPs are produced during glycolysis?

 
 
 
 

74. In prokaryotes chlorophylls is present in the:

 
 
 
 

75. The biological energy transformation is called:

 
 
 
 

76. First action spectrum was obtained by:

 
 
 
 

77. Which of the followings is maximum absorbed by chlorophyll?

 
 
 
 

78. Water containing 018:

 
 
 
 

79. The oxygen released during photosynthesis would be:

 
 
 
 

80. The pigment with yellow colour is:

 
 
 
 

81. Cristae:

 
 
 
 

82. Which of the followings is not the wavelength of visible light?

 
 
 
 

83. The compensation point comes in the:

 
 
 
 

84. Daily Rhythmic opening and closing of stomata:

 
 
 
 

85. The acetyl CoA unites with which of following molecule during Krebs cycle?

 
 
 
 

86. A molecule of ATP releases energy:

 
 
 
 

87. Most of the photosynthetic enzymes are present in:

 
 
 
 

88. Pyruvic acid is the end product of:

 
 
 
 

89. Which of the followings is common in aerobic anaerobic respiration?

 
 
 
 

90. Cyclic phosphorylation starts when:

 
 
 
 

91. Photosynthetic pigments are organized into clusters:

 
 
 
 

92. Carbon dioxide enters the leaves through:

 
 
 
 

93. Respiratory chain is present in:

 
 
 
 

94. The percentage of photosynthesis in land plants is:

 
 
 
 

95. Which of the following compounds is produced during pyruvic acid oxidation?

 
 
 
 

96. Break down of terminal phosphate of ATP:

 
 
 
 

97. The power house of the cell is:

 
 
 
 

98. The number of ATPs produced during transfer of electron from NADH to oxygen is:

 
 
 
 

99. The NADPH₂ has:

 
 
 
 

100. Van Niel hypothesized that plants split water as a source of:

 
 
 
 

101. which of the following wavelengths is least absorb by chlorophyll?

 
 
 
 

102. Glycolysis is the break down of:

 
 
 
 

103. The synthesis of ATP during light reaction is called:

 
 
 
 

104. Dark reactions take place in the of chloroplast.

 
 
 
 

105. Which of the followings is not the wavelength of visible light?

 
 
 
 

106. The carbon dioxide acceptor during dark reaction is:

 
 
 
 

107. enzyme Q is in turn oxidized by cytochrome:

 
 
 
 

108. Thylakoid interior space:

 
 
 
 

109. A reducing agent is that compound which:

 
 
 
 

110. Thylakoid sacs are stacked in columns called:

 
 
 
 

111. Chemiosmosis during photosynthesis takes place in:

 
 
 
 

112. CO₂ is converted into sugar. This CO₂ is:

 
 
 
 

113. Air contains carbon dioxide about:

 
 
 
 

114. Light behaves as wave as well as particles:

 
 
 
 

115. Chlorophyll b is found alongwith chlorophyll a in all green plants and:

 
 
 
 

116. During the isotope tracer technique second group of plant was given H₂O containing common oxygen with CO₂ containing O18. The oxygen released during photosynthesis would be:

 
 
 
 

117. Photo excited electrons take an alternative path:

 
 
 
 

118. Conventially “P” in ATP stands for:

 
 
 
 

119. Which of the following electron acceptors is absent during cyclic phosphorylation?

 
 
 
 

120. The peaks of the action spectrum of photosynthesis are comparatively broader than the absorption spectrum of chlorophylls due to:

 
 
 
 

121. Photosynthetic prokaryotes:

 
 
 
 

122. During oxidation of which electron acceptor, ATP is not produced:

 
 
 
 

123. Which of the following compounds is formed during anaerobic reaction?

 
 
 
 

124. How many atoms of oxygen are present in chlorophyll b?

 
 
 
 

Short Questions

1. Define alcoholic fermentation. Write its equation.
2. Define bioenergetics?
3. Define glycolysis. Where does it take place?
4. Define grana?
5. Define photosynthesis ?
6. Define photosynthesis with equation.
7. Define the term Bioenergetics.
8. Differentiate between antenna complex and reaction center.
9. Differentiate between photophosphorylation and oxidative photophosphorylation.
10. Does all the right falling on the leaves is absorbed?
11. Does pyruvic acid enter into mitochondria directly?
12. Explain the roles of the following in aerobic respiration: (a) NAD and FAD (b) oxygen?
13. Give approximate estimate of chloroplasts in a green leaf?
14. Give definition of glycolysis?
15. Give the function spectrophotometer.
16. Give the importance of ATP.
17. How action spectra can be obtained?
18. How did the evolution of photosynthesis affect the metabolic pathway?
19. How does absorption spectrum of chlorophyll a differ from that of chlorophyll b?
20. How does carbon dioxide absorb by cell wall of mesophyll cells?
21. How does light affect opening and closing of stomata?
22. How energy stored in carbohydrates is released?
23. How is the formation of vitamin A linked with eating of carrot?
24. How many parts the reactions of photosynthesis consist of?
25. How much leaf surface is covered by stomata?
26. How much of the total photosynthesis take place in water and on land?
27. Name two solvents of chlorophll?
28. Sum to how much energy (as ATP) is made available to the cell from a single glues molecule by the operation of glycolysis , the formation of acetyl CoA the critic acid cycle, and the electron transport chain?
29. Trace the fat of hydrogen atoms removed from glucose during glycolysis when oxygen is present in muscle cells, compare this to the fat of hydrogen atoms removed from glucose when the amount of the available oxygen is insufficient to support aerobic respiration?
30. What antenna complex and reaction center have?
31. What are accessory pigments? Also give their role in light absorption?
32. What are accessory pigments? Give their one importance.
33. What are bacteriochlorophylls?
34. What are bioenergetics ?
35. What are carotenoids?
36. What are cytochromes?
37. What are grana?
38. What are light and photons?
39. What are photosystems?
40. What are the different kinds of chlorophyll and where are these found?
41. What are the end products of light reactions?
42. What are the major sites of photosynthesis?
43. What are thylakoids?
44. What do you know about the solubility of the chlorophyll molecule?
45. What do you mean by action spectrum.
46. What does a photo system of photosynthesis cell consists of?
47. What does the absorption spectrum of a pigment mean?
48. What is Calvin cycle?
49. What is cellular respiration?
50. What is compensation point?
51. What is external respiration?
52. What is FAD abbreviation for?
53. What is fermentation? Give its two types.
54. What is glycolysis? Where it takes place in cell?
55. What is payoff phase of glycolysis?
56. What is photolysis?
57. What is phytol?
58. What Is prophyrin ring?
59. What is spectrophotometer?
60. What is stroma?
61. What is the approximate number of chloroplasts in each mesophyll cell of the leaf?
62. What is the concentration of CO₂ in air?
63. What is the difference between an action spectrum and an absorption spectrum?
64. What is the functions of stomata?
65. What is the location of ETC and chemiosmosis in photosynthesis and cellular respiration?
66. What is the main difference between photophosphyorylation and oxidative phosphorylation?
67. What is the net production of ATP during glycolysis?
68. What is the percentage of photosynthesis carried out by terrestrial as well as aquatic organisms?
69. What is the source of energy used on earth?
70. What is thylakoid?
71. What radiations are most important to life?
72. Where does Krebs cycle take place in the cell?
73. Which wavelength of the light spectrum are least absorbed by the chlorophyll?
74. Who obtained the first action spectrum and when?
75. Why are the carotenoids usually not obvious in the leaves? They can be seen in the leaves before leaf fall. Why?
76. Why do plants appear green?
77. Why does absorption spectrum of chlorophyll a differ from that of chlorophyll b?
78. Why does magnesium deficiency cause yellowing in plants?
79. Why light and dark reactions have been given these names?
80. Why mitochondria are called power houses?
81. Write down the first step in Krebs cycle?
82. Write the photolysis of water in photosynthesis.

Long Questions

1. What is glycolysis? Give its Outline (sketch).
2. Describe in detail cyclic phosphorylation with the help of a diagram.
3. Give in detail the phases of Calvin cycle.
4. Sketch Krebs Cycle, (no description).
5. Sketch Calvin cycle (no description).
6. Define bioenergetics? Write its importance.
7. Differentiate between photosynthesis and respiration?
8. What is compensation point?
9. How it was proved that source of O₂ in photosynthesis is water
10. What are accessory pigments? State their role.
11. Differentiate between Chlorophyll a and Chlorophyll ?
12. Define photolysis and photophosphorylation?
13. Differentiate between Light dependent and light independent reaction?
14. Give function of NADP reductase?
15. Detine an calvin Benson cye relluar respiration emiosmosis?
16. Whatis Malvan Calvin Benson cycle?
17. Differentiate between organismic and cellular respiration
18. Differentiate between aerobic and anaerobic respiration?
19. What is ATP? Write its importance.
20. Differentiate between alcoholic and lactic acid fermentation?
21. Define kreb cycle.
22. What is glycolysis? Where it takes place.
23. What is cytochrome?

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