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| Topic: | Respiration In Plants NEET Questions |
| Examinations: | NEET, AIIMS, JIPMER |
| Class: | 11 (CBSE/NCERT) Biology |
| No of Questions: | 100+ |
| Question type: | Multiple Choice Question |
| Question Format: | Text & PDF |
| PDF Size: | 1 MB |
| Download PDF: | Attached Below |
Respiration In Plants NEET Questions and Answers
1. Which of the following compounds are not oxidised to release energy?
a) Proteins
b) Fats
c) Carbohydrates
d) DNA
Answer: d
2. Which of the following acts as the energy currency of the cell?
a) ATP
b) Enzymes
c) Proteins
d) DNA
Answer: a
3. Which of the following is used as a precursor for the biosynthesis of other molecules?
a) Phosphorous substrate
b) Nitrogen substrates
c) Carbon skeletons
d) Sulphur skeletons
Answer: c
4. Which of the following gases do plants require for respiration?
a) O2
b) CO2
c) N2
d) H2O
Answer: a
5. By the use of which of the following structures, plants exchange gases?
a) Stem
b) Root
c) Bark
d) Stomata
Answer: d
6. Why plants can get along without the need for specialised respiratory organs?
a) It would be an extra expense
b) They don’t like it
c) Each plant part takes care of its own needs
d) Oxygen is easily available for all the parts of the plants
Answer: c
7. What are lenticels?
a) Openings on the surface of the bark
b) Openings on the surface of roots
c) Pores on leaves
d) Pores on stem
Answer: a
8. Glycolysis is also called ________
a) EMP pathway
b) FMR pathway
c) LMS pathway
d) OMS pathway
Answer: a
9. Which is considered as the universal pathway in a biological system?
a) Krebs cycle
b) Electron Transport System
c) Glycolysis
d) Photo Oxidation
Answer: c
10. In glycolysis, one molecule of glucose is reduced to_______
a) fructose
b) pyruvate
c) phosphate
d) phosphoglycerate
Answer: b
11. The net gain of ATP in glycolysis is _____ ATP
a) 16
b) 32
c) 4
d) 8
Answer: d
12. Name the protein that helps pyruvate enter into the mitochondrial matrix.
a) Transport protein
b) Contractile protein
c) Adipose protein
d) Secretory protein
Answer: a
13. The enzyme that serves as the connecting link between glycolysis and Krebs cycle is ______
a) phosphoenolpyruvic acid
b) glyceraldehyde
c) acetyl CoA
d) isomerase
Answer: c
14. During glycolysis, one NADH is equivalent to _______ number of ATP.
a) 4
b) 3
c) 2
d) 1
Answer: b
15. The scientists that discovered glycolysis are ______
a) Embden, Meyerhof, and Parnas
b) Hans Kreb and John Dalton
c) Rudolf Virchow and Robert Brown
d) Robert Hooke only
Answer: a
16. Which of the following are the end products of the complete combustion of glucose?
a) CO2 and starch
b) Fructose and lactose
c) H2O and mannose
d) CO2 and H2O
Answer: d
17. Where does the energy required to carry life processes come from?
a) Food
b) House
c) Earth
d) Galaxy
Answer: a
18. Which of the following can synthesise their food?
a) Yellow plants
b) Green plants
c) Animals
d) Mycoplasma
Answer: b
19. What kind of organisms are fungi?
a) Saprophytes
b) Carnivores
c) Omnivores
d) Herbivores
Answer: a
20. What is meant by cellular respiration?
a) Breakdown of water
b) Breakdown of air to consume energy
c) Breakdown of food materials to release energy
d) Breakdown of soil to release energy
Answer: c
21. Where does the photosynthesis take place in eukaryotes?
a) Mitochondria
b) Cytoplasm
c) Chloroplasts
d) Vacuoles
Answer: c
22. The breaking of which of the following bonds leads to release of energy?
a) P-P bonds
b) C-C bonds
c) N-N bonds
d) S-S bonds
Answer: b
23. What is the strategy of the plants to oxidise glucose?
a) Oxidise glucose in several large steps
b) Oxidise glucose in several small steps
c) Reduce glucose in several large steps
d) Reduce glucose in several small steps
Answer: b
24. During the process of respiration, which of the following is not released?
a) Carbon dioxide
b) Water
c) Oxygen
d) Energy
Answer: c
25. What was the kind of atmosphere where the first cells on this planet lived?
a) Reducing
b) Oxidising
c) No atmosphere
d) Gold was present
Answer: a
26. What is the breakdown of glucose to pyruvic acid known as?
a) Respiration
b) Glycolysis
c) Combustion
d) Hydrolysis
Answer: b
27. Where does glycolysis take place?
a) Cytoplasm
b) Mitochondrial matrix
c) Plasma membrane
d) Inner mitochondrial membrane
Answer: a
28. Who discovered fermentation?
a) Gay Lussac
b) Louis Pasteur
c) Kepler
d) Ernst Haeckel
Answer: b
29. What are the final products of fermentation?
a) CO2 and H2O
b) CO2 and methanol
c) H2O and ethanol
d) CO2 and ethanol
Answer: d
30. Which of the following enzymes is not used under anaerobic conditions?
a) Pyruvic decarboxylase
b) Alcohol dehydrogenase
c) Lactate dehydrogenase
d) Pyruvate dehydrogenase
Answer: d
31. Where does lactic acid fermentation take place in animal cells?
a) In the whole body
b) Sometimes in the muscles
c) Main respiratory pathway for muscles
d) In eyes
Answer: b
32. How much energy is released in lactic acid and alcohol fermentation?
a) Less than 7 per cent
b) More than 7 per cent
c) More than 50 per cent
d) More than 75 per cent
Answer: a
33. At what percentage, yeast poison themselves?
a) 4%
b) 7%
c) 13%
d) 45%
Answer: c
34. In how many ways do different cells handle pyruvic acid?
a) One
b) Two
c) Three
d) Four
Answer: c
35. What is aerobic respiration?
a) Partial oxidation of glucose
b) Incomplete oxidation of glucose
c) Complete oxidation of organic substances
d) Complete oxidation of only glucose
Answer: c
36. Where does aerobic respiration usually takes place?
a) Lower vertebrates
b) Higher organisms
c) Prokaryotes
d) Only unicellular eukaryotes
Answer: b
37. What is the efficiency of aerobic respiration?
a) More than 75%
b) Approximately 45%
c) Less than 20%
d) 99%
Answer: b
38. Where does the second process of aerobic respiration take place?
a) In the lumen of mitochondria
b) In the matrix of mitochondria
c) In the inner membrane of mitochondria
d) In the cristae of mitochondria
Answer: c
39. How many CO2 molecules are left during the complete oxidation of pyruvate?
a) One
b) Two
c) Five
d) Three
Answer: d
40. Which of the following is a crucial event in aerobic respiration?
a) Simultaneous synthesis of ATP
b) Synthesis of ethanol and water
c) Complete oxidation of methanol
d) Complete oxidation of carbon-dioxide
Answer: a
41. Which of the following participates in the reaction catalysed by pyruvic dehydrogenase?
a) Carbon dioxide
b) Water
c) Ethanol
d) Coenzyme A
Answer: d
42. How many molecules of NADH are produced by the metabolism of pyruvic acid?
a) One
b) Two
c) Three
d) Four
Answer: b
43. Who discovered the Tricarboxylic acid cycle?
a) Hans Krebs
b) Ernst Haeckel
c) Louis Pasteur
d) Charles Darwin
Answer: a
44. The TCA cycle starts with the condensation of which of the following compounds?
a) Sucrose
b) Acetyl group
c) Ethanol
d) Pyruvate
Answer: b
45. How many steps of decarboxylation lead to the formation of ketoglutaric acid?
a) One
b) Three
c) Two
d) Seven
Answer: c
46. Which of the following compounds is the first member of the TCA cycle?
a) Oxaloacetic acid
b) α-ketoglutaric acid
c) Succinic acid
d) Malic acid
Answer: a
47. What is the full form of SLP?
a) Subgeneric Level of Phosphorylation
b) Subcutaneous Level Photophosphorylation
c) Substrate Level Phosphorylation
d) Substrate Level Pyruvatisation
Answer: c
48. How many points are there in the TCA cycle where NAD+ is reduced?
a) One
b) Two
c) Three
d) Four
Answer: c
49. Which of the following points are not necessary for the TCA to run continuously?
a) Replenishment of Oxaloacetic acid
b) Regeneration of NAD+
c) Regeneration of FAD+
d) Regeneration of malic acid
Answer: d
50. What is the full form of ETS?
a) Electrolyte Transport Serum
b) Electrolyte Tissue System
c) Electron Transport System
d) Electron Transmission System
Answer: c
51. What is the use of ETS?
a) To release and utilise energy
b) To store energy
c) To transfer energy to the surroundings
d) To take energy from the surroundings
Answer: a
52. Where are the electrons passed in ETS?
a) Oxygen
b) Water
c) Carbon
d) Nitrogen
Answer: a
53. Which complex oxidises the electrons produced by NADH?
a) Complex I
b) Complex II
c) Complex V
d) Complex IV
Answer: a
54. What is reduced Ubiquinone called as?
a) Ubiquinone
b) Ubiquity
c) Ubiquinol
d) Ubiquinal
Answer: c
55. Cytochrome c acts a carrier between which of the two complexes?
a) Complex I and Complex II
b) Complex II and Complex III
c) Complex III and Complex IV
d) Complex IV and Complex V
Answer: c
56. How many copper centres are present in Complex IV?
a) One
b) Two
c) Three
d) Four
Answer: b
57. The number of ATP molecules synthesised depends upon which of the following?
a) Nature of electron donor
b) Nature of electron acceptor
c) Nature of proton donor
d) Nature of atom
Answer: a
58. Which of the following is the final hydrogen acceptor?
a) Phosphorous
b) Carbon
c) Nitrogen
d) Oxygen
Answer: d
59. Which of the following energy is utilised for the production of the proton gradient in ETS?
a) Energy of Oxygen
b) Energy of Hydrogen
c) Energy of Phosphorous
d) Energy of Oxidation-Reduction
Answer: d
60. Which of the following complexes in ETS are involved in the transport of protons?
a) Complex I
b) Complex II
c) Complex V
d) Complex IV
Answer: c
61. How many major components are there in Complex V of ETS?
a) One
b) Two
c) Three
d) Four
Answer: b
62. What kind of protein is F1 that is present in Complex V?
a) Peripheral protein
b) Embedded protein
c) Integral protein
d) Membrane less protein
Answer: a
63. What kind of compound is F0 particle?
a) Peripheral protein
b) Cutaneous protein
c) Embedded protein
d) Integral protein
Answer: d
64. For each ATP produced, how many protons pass through the intermembrane space?
a) One
b) Two
c) Three
d) Four
Answer: b
65. Which of the following is the favoured substance for respiration?
a) Sucrose
b) Lactose
c) Glucose
d) Mannose
Answer: c
66. For the fats to be respired, what are they broken into?
a) Glycerol and fatty acids
b) Glycerol and ethanol
c) Fatty acids only
d) Glycerol only
Answer: a
67. Which of the following are responsible for the degradation of proteins?
a) Lipases
b) DNase
c) RNase
d) Proteases
Answer: d
68. Which pathway was respiration traditionally considered as?
a) Anabolic pathway
b) Catabolic pathway
c) Amphibolic pathway
d) Bolic pathway
Answer: b
69. What would happen if organisms need to synthesise fatty acids which had already broken down into acetyl CoA?
a) Acetyl CoA would be withdrawn from the pathway
b) Acetyl CoA would be further broken down
c) Ethanol would be released
d) Glycerol would be released
Answer: a
70. What is catabolism?
a) Joining of substances
b) Breaking down processes
c) Continuous processes
d) Discontinuous processes
Answer: b
71. What is meant by anabolism?
a) Synthesis of some molecules
b) Breaking down of molecules
c) Joining of bonds
d) Shifting of bonds
Answer: a
72. In mitochondria, which of the following is the site for the oxidation-reduction reaction?
a) Inner membrane
b) Outer membrane
c) Matrix
d) Cristae
Answer: d
73. What is an amphibolic pathway?
a) Breaking down processes
b) Another name for catabolic processes
c) Both anabolic and catabolic processes
d) Another name for anabolic processes
Answer: c
74. Is it possible to make calculations of the net gain of ATP?
a) Not possible
b) Possible only theoretically
c) Possible only in reality
d) Sometimes possible and sometimes not
Answer: b
75. Which of the following is an assumption of the respiratory balance sheet?
a) Respiration is a sequential pathway
b) Respiration does not exist
c) Energy cannot be calculated in a respiratory pathway
d) Energy is always lost in the form of heat in respiration
Answer: a
76. Which of the following is not an assumption of the respiratory balance sheet?
a) NADH synthesised in glycolysis is transferred into mitochondria
b) None of the intermediates is used to synthesise other compounds
c) Respiration is a sequential pathway
d) Energy can never be stored
Answer: d
77. Do all the respiratory pathways work simultaneously?
a) No, not at all
b) They take place one after the other
c) Yes, they work simultaneously
d) Sometimes they work independently
Answer: c
78. When is the ATP utilised?
a) It is utilised as and when needed
b) It is never utilised
c) It is only in the stored form
d) Only when the cell is about to replicate
Answer: a
79. How many ATP molecules are gained during aerobic respiration?
a) 2 ATP
b) 10 ATP
c) 35 ATP
d) 38 ATP
Answer: d
80. How many ATP molecules are gained during fermentation?
a) 8 ATP
b) 2 ATP
c) 10 ATP
d) 4 ATP
Answer: b
81. What is the speed of oxidation of NADH in case of fermentation?
a) Vigorous
b) Very slow
c) Slow
d) Fast
Answer: c
82. What is the full form of RQ?
a) Respiratory Quotient
b) Reservatory Quotient
c) Reservation Q-value
d) Reservatory Q-value
Answer: a
83. On which of the following does the respiratory quotient depend?
a) The respiratory concentration of Oxygen
b) The respiratory substrate used during respiration
c) The volume of Carbon-dioxide evolved
d) Energy evolved during respiration
Answer: b
84. What is the value of RQ in carbohydrates?
a) 0.7
b) 0.3
c) 1
d) 10
Answer: c
85. What is the RQ value for tripalmitin?
a) 0.9
b) 1
c) 0.3
d) 0.7
Answer: d
86. What is the respiratory quotient for organic acids?
a) More than 1
b) Less than zero
c) Zero
d) Less than one but greater than Zero
Answer: a
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