Chapter 14 - Respiration in Plant | Respiration in Plant Quiz Questions

1. Partial oxidation of glucose without the help of oxygen into pyruvic acid is known as

(a) glycolysis (b) Kreb’s cycle (c) ETS (d) all

 2. Scheme of glycolysis is given by

(a) Embden (b) Meyerhof (c) Parnas (d) All

 3. Which of the following is correct about glycolysis (EMP pathway)?

(a) It is a common path for aerobic and anaerobic respiration

(b) It occurs in cytoplasm

(c) O2

 is not required for process

(d) All

 4. Glycolysis occur in how many controlled steps

(a) 1 (b) 5 (c) 10 (d) 15

 5. In plant the end product of photosynthesis is

(a) sucrose (b) starch (c) glycogen (d) glucose

 6. Sucrose is converted to glucose and fructose by enzyme:

(a) Maltase (b) Invertase (c) Lactase (d) Hexokinase

 7. Glucose → Glu-6-phosphate occur due to enzyme

(a) Hexokinase (b) Oxidase (c) Hydrolase (d) Lysase

 8. Common to all living organism is

(a) Kreb’s cycle (b) EMP pathway (c) ETC (d) All

 9. 1 molecule of glucose on glycolysis produces

(a) 2 molecule of pyruvic acid (b) 1 molecule of pyruvic acid

(c) 2 molecule of CO2 (d) 2 molecule of O2

 10. Which of the following is a energy yielding process?

(a) 2-phosphoglycerate to 2-phosphoenol pyruvate

(b) Frutose to Fructose-6-phosphate

(c) Phosphoenol pyruvic acid to pyruvic acid

(d) Frutose 1, 6-biphosphate to PGAL and DHAP

 11. Yeast poisons themselves to death when alcohol concentration reaches to ________ in alco-

holic fermentation.

(a) 2% (b) 10% (c) 13% (d) 20%

 12. Lactic acid fermentation occurs in

(a) some bacteria (b) muscle cell under anaerobic condition

(c) both (a) and (b) (d) aerobic condition

13. How much % of energy released in fermentation?

(a) < 1% (b) < 7% (c) > 10% (d) > 20%

 14. Which of the following relation shows substrate level phosphorylation?

(a) Citric acid → α-ketoglutaric acid

(b) Malic acid → oxalo-acetic acid

(c) α-ketoglutaric acid → Succinic Co A

(d) Succinyl-Co A → Succinic acid

 15. Which of the following is a ‘5C’ compound?

(a) Oxaloacetic acid (b) Citric acid

(c) α-ketoglutaric acid (d) Succinic acid

 16. At how many places in Kreb’s cycle NADH + H+

 is formed?

(a) 1 (b) 2 (c) 3 (d) 4

 17. At how many places in Kreb’s cycle FADH2

 is formed?

(a) 1 (b) 2 (c) 3 (d) 4

 18. ETS is present in

(a) stroma

(b) matrix of mitochondria of mitochondria

(c) inner membrane of mitochondria

(d) outer membrane of mitochondria

 19. Match the column:

Column I Column II

 A. NADH dehydrogenase – 1. Complex IV

B. Cytochrome bc1

 – 2. Complex III

C. Cytochrome aa3

 – 3. Complex I

D. ATP synthase – 4. Complex V

(a) A–1, B–2, C–3, D–4 (b) A–3, B–2, C–1, D–4

(c) A–4, B–1, C–3, D–2 (d) A–1, B–4, C–2, D–3

 20. Ubiquinone transfer its electron to

(a) Complex II (b) Complex I (c) Cytochrome c (d) Matrix

 21. Which of the following is correct about cytochrome?

(a) Small protein attach to outer surface of inner membrane of mitochondria

(b) Act as mobile carrier

(c) Transfer electron between complex III and IV

(d) All

 22. 1 molecule of NADH gives rise to ________ molecules of ATP, while 1 molecule of FADH2

gives ________ molecule of ATP

(a) 3, 2 (b) 2, 3 (c) 2, 2 (d) 3, 3

 23. O2

 acts as

(a) terminal hydrogen acceptor (b) Terminal electron acceptor

(c) both (d) none

 24. Which type of phosphorylation occurs in mitochondria?

(a) Oxidative phosphorylation (b) Substrate level phosphorylation

(c) Photophosphorylation (d) Both (a) and (b)

 25. When 12H+

pass through F0

-F1

 particle, how many ATPs are produced?

(a) 6 ATP (b) 4 ATP (c) 8 ATP (d) 10 ATP

27. To form respiratory balance sheet, calculations can be made on certain assumptions like:

(a) There is sequential pathway functioning like glycolysis, TCA cycle and ETS following

one often another

(b) NADH formed in glycolysis transferred to mitochondria and undergoes oxidative

phosphorylation

(c) None of the intermediates in pathway are utilized to synthesize any other compound and

glucose is being respired—no other alternative substrate are entering in the pathway at

any of the intermediary stages

(d) All

 28. How many molecules of ATP are produce by oxidation of 1 molecule of glucose?

(a) 30 (b) 36 (c) 4 (d) 40

 29. Which of the following is incorrect about fermentation?

(a) It account for partial breakdown of glucose

(b) Net gain is only 2 ATP

(c) NADH to NAD+

 formation reaction is vigorous

(d) It occur in cytoplasm

 30. Respiratory pathway is best defi ned as

(a) catabolic pathway (b) anabolic pathway

(c) amphibolic pathway (d) none

 31. Glycerol enters the respiratory pathway at

(a) Glu-6‒phosphate (b) PGA (c) PGAL (d) PEP

 32. Amino acid enters in respiratory pathway at

(a) Kreb’s cycle (b) Pyruvate

(c) Acetyl CoA (d) any of the above

 33. Fatty acid for entry into Kreb’s cycle degraded to

(a) Pyruvate (b) Citric acid (c) Acetyl CoA (d) PGA

34. RQ for tripalmitin is

(a) 0.8 (b) 0.7 (c) 0.9 (d) 0.5

 35. RQ for protein is

(a) 0.8 (b) 0.7 (c) 0.9 (d) 0.5

 36. RQ for carbohydrate is

(a) 0.7 (b) 0.9 (c) 1 (d) 0.4

 37. Conversion of pyruvic acid into ethyl alcohol is facilitated by

(a) Carboxylase (b) Dehydrogenase

(c) Decarboxylase and dehydrogenase (d) Phosphatase

 38. Which of the following represents the equation of fermentation?

(a) C6

H12O6 + 6O2 → 6CO2 + 6H2

O + 673 k cal

(b) C6

H12O6 → 2C2

H5

OH + 2CO2 + 18 k cal

(c) 6CO2

 + 12H2O Light ⎯⎯⎯⎯ Chlorophyll→ C6

H12O6 + 6H2

O + 6O2

(d) 6CO2 + 6H2

O → C6 H12O6 + 6O2

 39. Anaerobic respiration takes place in the

(a) mitochondria (b) cytoplasm (c) lysosomes (d) ER

 40. What is the total gain of energy during anaerobic respiration?

(a) One molecule of ATP (b) Two molecules of ATP

(c) Four molecules of ATP (d) Eight molecules of ATP

 41. Cyanide resistant pathway is

(a) anaerobic respiration (b) aerobic respiration

(c) both (a) and (b) (d) none

 42. Energy accumulating in ATP is

(a) disulphide bond (b) hydrogen bonds

(c) high energy phosphate bond (d) Ester bond

 43. In plants, respiration takes place

(a) only in leaves during night (b) only in leaves during day

(c) in all living cells (d) none

 44. In both aerobic and anaerobic respiration which same product is formed?

(a) Lactic acid (b) Pyruvic acid (c) Citric acid (d) Organic acid

 45. Which of the following is reverse of photosynthesis?

(a) Respiration (b) Protein synthesis (c) Fat synthesis (d) All

 46. The process of phosphorylation takes place in

(a) glycolysis (b) Kreb’s cycle (c) HMP pathway (d) all

 47. Match the given below organelles with their function:

Column I Column II

 A. Kreb’s cycle – 1. Stalked particles of mitochondria

B. Photorespiration – 2. Cytoplasm

C. Oxidative phosphorylation – 3. Peroxisomes

D. Glycolysis – 4. Inner surface of membrane of mitochondria

(a) A‒2, B‒3, C‒4, D‒1 (b) A‒1, B‒2, C‒3, D‒4

(c) A‒4, B‒3, C‒1, D‒2 (d) A‒3, B‒2, C‒4, D‒1

48. Match the name of scientist with his work:

Column I Column II

 A. PPP (Pentose Phosphate Pathway) – 1. Kuhne

B. Demonstration of fermentation – 2. Kreb’s

C. TCA cycle – 3. Warburg‒Dickens

D. Glycolysis – 4. Embden Mayerhof Parnas

(a) A‒1, B‒2, C‒3, D‒4 (b) A‒2, B‒4, C‒3, D‒1

(c) A‒1, B‒2, C‒4, D‒3 (d) A‒3, B‒1, C‒2, D‒4

 49. Match the correct answers with type of respiration and respiratory substrates:

Column I Column II

 A. Respiration – 1. Proteins

B. Floating respiration – 2. Starch

C. Cytoplasmic respiration – 3. Carbohydrates

D. Protoplasmic respiration – 4. Lactose

(a) A‒3, B‒2, C‒1, D‒4 (b) A‒2, B‒3, C‒4, D‒1

(c) A‒1, B‒2, C‒3, D‒4 (d) A‒2, B‒4, C‒1, D‒3

 50. The energy yield as a result of total oxidation of one glucose molecule during cellular respira-

tion is to convert

(a) 34 molecules of ADP into 34 molecules of ATP

(b) 30 molecules of ADP into 30 molecules of ATP

(c) 36 molecules of ADP into 36 molecules of ATP

(d) 32 molecules of ADP into 32 molecules of ATP

 51. The connecting link among glycolysis, Kreb’s cycle and beta-oxidation of fatty acid is

(a) pyruvic acid (b) acetyl CoA (c) acetaldehyde (d) citric acid

 52. Which of the following is the source of respiration?

(a) Stored food (b) RNA (c) DNA (d) ATP

 53. From substrate level, phosphorylation ATP are produced

(a) 2 (b) 6 (c) 10 (d) 8

 54. Select the incorrect statement:

(1) Plants have no special system for breathing or gaseous exchange

(2) Acetyl co-A enter in TCA cycle opening in matrix of mitochondria

(3) The RQ depends upon the type of respirarory substance used during respiration of glucose

occur in some bacteria

(4) In fermentation complete oxidation

(a) 18 ATP (b) 38 ATP (c) 60 ATP (d) 80 ATP

 55. The aerobic respiration yields

(a) 8NADH2

, 2FADH2

, 2ATP (b) 10NADH2

, 2FADH2

, 38ATP

(c) 12NADH2

, 30ATP, H2

O (d) 10NADH2

, 2FADH2

, 2GTP, 2ATP

 56. How many ATP are used/required in glycolysis or for complete phosphorylation of a glucose

molecule?

(a) 4 (b) 2 (c) 6 (d) 8

58. Isomerization takes place in

(a) glycolysis (b) Kreb’s cycle

(c) oxidative phosphorylation (d) none

 59. In cellular respiration, O2

 is used as a fi nal receptor of

(a) ATP and NADH (b) H and E (c) Fe (d) Cytochrome

 60. First stage in respiration is

(a) aerobic oxidation of pyruvic acid (b) liberation of CO2

(c) glycolysis (d) electron transport system

 61. Besides the net gain of 2 ATP molecules in glycolysis which other molecules are simultane-

ously formed

(a) FADH2

 (b) NADPH2

 (c) NADH2

 (d) FAMH2

 62. Total ATP production during EMP pathway is

(a) 24 ATP molecules (b) 8 ATP molecules

(c) 38 ATP molecules (d) 6 ATP molecules

 63. Glycolysis takes place in

(a) mitochondria (b) cytoplasm

(c) both mitochondria and cytoplasm (d) vacuole

 64. Pyruvate (pyruvic acid) dehydrogenase is used in converting

(a) pyruvate to glucose (b) glucose to pyruvate

(c) pyruvic acid to lactic acid (d) pyruvate (pyruvic acid) to acetyl CoA

 65. The number of molecules of pyruvic acid formed from one molecule of glucose at the end of

glycolysis is

(a) 1 (b) 2 (c) 3 (d) 4

66. What is the other name of glycolysis?

(a) EMP pathway (b) TCA pathway

(c) HMS pathway (d) None

 67. The common phase between aerobic and anaerobic respiration is called

(a) Tricarboxylic acid cycle (b) Oxidative phosphorylation

(c) Embden, Meyerhoff , Parnas cycle (d) Kreb’s cycle

 68. The oxidation of one NADH2

 yields

(a) 18 ATP (b) 6 ATP (c) 3 ATP (d) 2 ATP

 69. The end product of glycolysis is

(a) acetyl Co-A (b) citric acid (c) pyruvic acid (d) fumaric acid

 70. Which one of the following is the fi rst step of glycolysis?

(a) Breakdown of glucose (b) Phosphorylation of glucose

(c) Conversion of glucose into fructose (d) Dehydrogenation of glucose

 71. Which of the following is the correct sequence of glycolysis?

(a) G 6–P → PEP → 3–PGAL → 3–PGA

(b) G 6–P → 3–PGAL → 3–PGA → PEP

(c) G 6–P → PEP → 3–PGA → 3–PGAL

(d) G 6–P → 3–PGA → 3–PGAL → PEP

 72. Which intermediate compound is involved in the synthesis of amino acids?

(a) Malic acid (b) Citric acid

(c) α-ketogluteric acid (d) Isocitric acid

 73. In ATP molecule energy is stored in

(a) chemical bonds (b) hydrogen bonds

(c) carbon bonds (d) pyrophosphate bonds

75. Kreb’s cycle is termed as the aerobic phase of respiration because

(a) it consumes oxygen

(b) oxygen acts as a catalyst

(c) aerobic conditions are essential for the continued operation of electron transport system

(d) all

 76. Between which of the following stages, GTP is formed by substrate level phosphorylation?

(a) Succinate to fumarate (b) Ketoglutarate to succinate

(c) Oxalosuccinate to glutarate (d) Fumarate to malate

 77. How many molecules of ATP are produced per molecule of FADH2

 oxidised?

(a) One (b) Two (c) Three (d) Four

 78. A molecule of ATP is formed when electron passes from

(a) Cyt c to Cyt a (b) Cyt a to Cyt c (c) Cyt b to Cyt c (d) Cyt c to Cyt b

 79. Kreb’s cycle is also known as

(a) glyoxylate cycle (b) EMP pathway (c) citric acid cycle (d) glycolate cycle

 80. Link between glycolysis and Kreb’s cycle is

(a) citric acid (b) acetyl CoA (c) succinic acid (d) oxaloacetic acid

 81. The reaction of Kreb’s cycle take place

(a) in cytoplasm (b) in endoplasmic reticulum

(c) in matrix of mitochondria (d) on the surface of mitochondrion

 82. Oxidative phosphorylation occurs in the

(a) outer membrane of mitochondria (b) inner membrane of mitochondria

(c) stroma of chloroplast (d) grana of chloroplast

 83. Which of the following is the correct sequence in Kreb’s cycle?

(a) Isocitric acid → Oxalosuccinic acid → α–ketogluteric acid

(b) Oxalosuccinic acid → Isocitric acid → α–ketogluteric acid

(c) α–ketogluteric acid → Isocitric acid → Oxalosuccinic acid

(d) Isocitric acid → α–ketogluteric acid → Oxalosuccinic acid

 84. In how many steps, CO2

 is released in aerobic respiration of pyruvic acid?

(a) One (b) Six (c) Three (d) Twelve

 85. The formation of acetyl coenzyme–A from pyruvic acid is the result of its

(a) reduction (b) dehydration

(c) dephosphorylation (d) oxidative decarboxylation

 86. Oxidative phosphorylation and photophosphorylation both require the electron carrier

(a) cytochrome (b) oxygen (c) carbon dioxide (d) water

 87. In an electron transport chain, in terminal oxidation, the cytochrome which donates electrons

to O2

 is

(a) cytochrome b (b) cytochrome c (c) cytochrome a3

 (d) cytochrome a

88. The last or terminal cytochrome in respiratory chain is

(a) Cyt b (b) Cyt a3 (c) Cyt a (d) Cyt c

 89. The correct sequence of electron acceptor in ATP synthesis is

(a) Cyt a a3

 b c (b) Cyt b c a a3

 (c) Cyt b c a3

 a (d) Cyt c b a a3

 90. In Kreb’s cycle, the FAD precipitates as electron acceptor during the conversion of

(a) Succinyl CoA to succinic acid (b) α-ketoglutarate to succinyli CoA

(c) Fumaric acid to maleic acid (d) Succinic acid to fumaric acid

 91. RQ for glucose is

(a) 1 (b) 0.5 (c) 2 (d) 0.05

 92. With which of the following fatty acid value of RQ is one?

(a) Acetic acid (b) Oleic acid (c) Stearic acid (d) Palmitic acid

 93. RQ is defi ned as

(a) Ratio between CO2

 liberated and O2

 taken

(b) Volume of oxygen taken

(c) Volume of carbon dioxide liberated

(d) Ratio between oxygen taken and fat utilized

 94. RQ of fatty substances is generally

(a) unity (b) less than one (c) greater than one (d) zero

 95. RQ of sprouting potato tubers will be

(a) 1 (b) < 1 (c) > 1 (d) 0

 96. RQ in anaerobic respiration is

(a) 0 (b) ∝ (c) 1 (d) > 1

Answer Keys -

 1. (a) 2. (d) 3. (d) 4. (c) 5. (a) 6. (b) 7. (a) 8. (b) 9. (a) 10. (c)

 11. (c) 12. (c) 13. (b) 14. (d) 15. (c) 16. (c) 17. (a) 18. (c) 19. (b) 20. (c)

 21. (d) 22. (a) 23. (c) 24. (d) 25. (a) 26. (a) 27. (d) 28. (b) 29. (c) 30. (c)

 31. (d) 32. (d) 33. (c) 34. (b) 35. (c) 36. (c) 37. (c) 38. (b) 39. (b) 40. (b)

 41. (a) 42. (c) 43. (c) 44. (b) 45. (a) 46. (d) 47. (c) 48. (d) 49. (a) 50. (c)

 51. (b) 52. (a) 53. (b) 54. (d) 55. (a) 56. (b) 57. (b) 58. (a) 59. (b) 60. (c)

 61. (a) 62. (b) 63. (b) 64. (d) 65. (b) 66. (a) 67. (c) 68. (c) 69. (c) 70. (b)

 71. (b) 72. (c) 73. (d) 74. (c) 75. (c) 76. (b) 77. (b) 78. (c) 79. (c) 80. (b)

 81. (c) 82. (b) 83. (a) 84. (c) 85. (d) 86. (a) 87. (c) 88. (b) 89. (b) 90. (d)

 91. (a) 92. (a) 93. (a) 94. (b) 95. (a) 96. (b)