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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Choose the correct combination of labelling the molecules involved in the pathway of anaerobic respiration in Yeast A. `a-ethanol, b-CO_(2), c-acetaldehyde`B. `a-CO_(2), b-acetaldehyde, c-ethanol`C. `a-CO_(2), b-ethanol, c-acetaldehyde`D. `a-ethanol, b-acetaldehyde, c-CO_(2)` |
| Answer» Correct Answer - D | |
| 52. |
In which one of the following steps of citric acid cycle, FAD is reduced to `FADH_(2)`A. Pyruvate `rarr` Acetyl CoAB. Succninc acid `rarr` Malic acidC. Malic acid `rarr` Oxaloacetic acidD. Citric acid `rarr alpha`-Ketoglutaric acid |
| Answer» Correct Answer - B | |
| 53. |
Choose the correct combination of labelling the number of carbon compounds in the substrate molecules involved in citric acid cycle. A. a-4C, b-6C, c-5C, d-4C, e-4CB. a-6C, b-5C, c-4C, d-5C, e-6CC. a-4C, b-5C, c-6C, d-4C, e-4CD. a-4C, b-6C, c-4C, d-5C, e-4C |
| Answer» Correct Answer - A | |
| 54. |
Which is correct for ADPA. Two high energy bondsB. One high energy bondC. Three high energy bondsD. None of the above |
| Answer» Correct Answer - B | |
| 55. |
What are the end products of Aerobic and Anaerobic Respirations? |
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Answer» End products of aerobic respiration: Carbon dioxide, Water, Energy End products of anaerobic respiration: Ethanol / Lactic acid, Carbon dioxide, EnergyEnd products of anaerobic respiration: Ethanol / Lactic acid, Carbon dioxide, Energy |
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| 56. |
Cluster of air sacs in lungs are calledA) Alveoli B) Bronchi |
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Answer» Correct option is A) Alveoli |
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| 57. |
As compared to ` CO_(2)` carbon monoxide binds to haemoglobinA. looselyB. very stronglyC. either loosely or stronglyD. without and force |
| Answer» Correct Answer - b | |
| 58. |
As compared to ` CO_(2)` carbon monoxide binds to haemoglobinA. loosely B. very stronglyC. either loosely or stronglyD. without and force |
| Answer» Correct Answer - b | |
| 59. |
Which of the following is a 4-carbon compoundA. Oxaloacetic acidB. Citric acidC. Phosphoglyceric acidD. Phosphoenol pyruvate |
| Answer» Correct Answer - A | |
| 60. |
The Oxygen Dissociation Curve is ……….. (a) sigmoid (b) straight line (c) curved (d) rectangular hyperbola |
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Answer» Correct Answer is: (a) sigmoid |
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| 61. |
R.Q. for tripalmatin as respiratory substrate isA. 0.7B. 1C. 0.9D. `oo` |
| Answer» Correct Answer - A | |
| 62. |
Dissociation curve of O2 (which is dissociation from Hb) shifts to the rights ………(a) O2 concentration decrease (b) CO2 concentration decreases (c) CO2 concentration increase (d) Chloride concentration increases |
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Answer» (c) CO2 concentration increase |
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| 63. |
The total volume of air a person can exhale after normal inspiration is ……… |
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Answer» Expiratory capacity. |
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| 64. |
When a person travels to higher elevations, he may develop the symptoms of acute mountain sickness. This is because of ……….. (a) nitrogen narcosis (b) high level of carbon dioxide in blood (c) low immunity (d) poor binding of O2 with haemoglobin |
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Answer» (d) poor binding of O2 with haemoglobin |
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| 65. |
When a person goes deep into the sea, he/she develops complications due to ……….. (a) increased partial pressure of O2 (b) increase in blood nitrogen content (c) increased partial pressure of CO2 (d) decrease in the pressure in the surrounding water |
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Answer» (b) increase in blood nitrogen content |
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| 66. |
Pyruvic acid is formed at the end ofA. Calvin cycleB. GlycolysisC. Krebs cycleD. Pentose phosphate way. |
| Answer» Correct Answer - B | |
| 67. |
Which one is inhibited if the cells contain excess of ATPA. Krebs cycleB. GlycolysisC. Oxidative phosphorylationD. Electron transport |
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Answer» Correct Answer - B Excess of ATP inhibits phosphofructokinase activity (allosteric inhibtion) which is esential for synthesis of fructose 1 : 6 diphosphate. |
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| 68. |
Arrange the apparatus as above and heat the glucose. What will happen to lime water when glucose burns? |
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Answer» Lime water turns milky due to carbon dioxide (CO2 ). |
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| 69. |
If the temperature is increased (above `35^(@)C`)A. Rate of photosynthesis will decline earlier than that of respirationB. Rate of respiration will decline earlier than that of photosynthesisC. There is no fixed patternD. Both decline simultaneously. |
| Answer» Correct Answer - A | |
| 70. |
Which one of the following is wrong about glycolysisA. It uses ATPB. It produces ATPC. End products are `CO_(2)" and H_(2)`D. NADH `(H^(+))` is produced |
| Answer» Correct Answer - C | |
| 71. |
Oxidative phosphorylation is production ofA. ATP in photosynthesisB. NADH in photosynthesisC. ATP in respirationD. NADH in respiration |
| Answer» Correct Answer - C | |
| 72. |
Apparatus to measure rate of respiration and R.Q. isA. AuxanometerB. PotemeterC. RespirometerD. Manometer |
| Answer» Correct Answer - C | |
| 73. |
Electron transport requiresA. CytochromesB. PhytochromeC. EnzymesD. Hormones. |
| Answer» Correct Answer - A | |
| 74. |
Number of oxygen molecules required for glycolytic breakdown of one glucose molecule isA. ZeroB. ThreeC. SixD. Thirty eight |
| Answer» Correct Answer - A | |
| 75. |
Site of glycolysis/EMP isA. ChloroplastsB. ChromosomeC. CytoplasmD. Nucleus. |
| Answer» Correct Answer - C | |
| 76. |
Site of glycolysis or EMP isA. MitochondiraB. CytoplasmC. E.R.D. Ribosomes |
| Answer» Correct Answer - B | |
| 77. |
When one glucose molecule is completely oxidised, it changesA. 36 ADP molecules into 36 ATP moleculesB. 38 ADP molecules into 38 ATP moleculesC. 30 ADP molecules into 30 ATP moleculesD. 32 ADP molecules into 32 ATP molecules. |
| Answer» Correct Answer - B | |
| 78. |
Which one requires oxygenA. FermentationB. EMP pathwayC. Pentose phosphate pathwayD. None of the above |
| Answer» Correct Answer - D | |
| 79. |
Number of oxygen molecules required for glycolytic breakdown of one glucose molecule isA. 38B. 36C. 2D. Zero |
| Answer» Correct Answer - D | |
| 80. |
Enzyme pair common to both EMP and `C_(3)` cycle isA. Aldolase and enolaseB. Aldolase and triose phosphate isomeraseC. Phosphoglyceromutase and triose phosphate isomeraseD. Cytochrome oxidase and enolase. |
| Answer» Correct Answer - B | |
| 81. |
Match and find the correct combination (a) Respiration in bacteria (b) Respiration in cyanobacteria (c) Respiration in eucaryotic cells (d) Mitochondria (e) Cytoplasmic membrane (f) Mesosomes.A. a-e, b-f, c-dB. a-f, b-e, c-dC. a-d, b-f, c-eD. a-e, b-d, c-f |
| Answer» Correct Answer - B | |
| 82. |
How many ATP molecules are produced when one glucose molecule is completely oxidised? |
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Answer» A net gain of 38 ATP molecules are formed from the total oxidation of one glucose molecule. |
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| 83. |
Total number of ATP molecules produced per glucose molecule in eucaryotic cell isA. 38B. 36C. 24D. 12 |
| Answer» Correct Answer - B | |
| 84. |
Cigarette smoking reduces the respiratory surface of the alveolar walls and it is known as …… |
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Answer» Emphysema . |
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| 85. |
Why does smoking affect oxygen supply to the body? (a) haemoglobin fails to bind with O2 (b) haemoglobin binds with carbon monoxide (c) Nicotine makes the heart heat faster (d) Blood vessels are narrowed |
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Answer» (b) haemoglobin binds with carbon monoxide |
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| 86. |
Respiration is a catabolic process because ofA) Breakdown of complex food molecules B) Conversion of light energy C) Synthesis of chemical energy D) Energy storage |
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Answer» Correct option is A) Breakdown of complex food molecules |
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| 87. |
Respiration is a catabolic process because of A) breakdown of complex food molecules B) conversion of light energy C) synthesis of chemical energyD) energy storage |
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Answer» A) breakdown of complex food molecules |
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| 88. |
The maximum volume of air that can be moved out during a single breath following a maximal inspiration is ………… |
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Answer» Vital capacity. |
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| 89. |
Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration.(a) Inspiratory Reserve Volume (b) Tidal Volume(c) Expiratory Reserve Volume (d) Residual Volume |
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Answer» (d) Residual Volume |
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| 90. |
The volume of air remaining in the lungs after a forceful expiration is ……… |
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Answer» Residual volume |
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| 91. |
In expiration, diaphragm becomes ……….. (a) Flattened (b) Relaxed (c) Straightened (d) Arched |
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Answer» In expiration, diaphragm becomes Relaxed. |
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| 92. |
It is a common observation that our breath is warmer than the air around us ; does respiration have anything to do with this? |
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Answer» Our exhaled air is warmer than the air around us because heat is liberated during respiration. |
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| 93. |
What is the role of epiglottis in respiration and swallowing food? |
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Answer» The epiglottis is a flexible flap at the superiorend of the pharynx in the throat. Epiglottis acts as a lid over glottis and prevents food from entering into larynx. Air from pharynx enters the larynx while food enters into oesophagus. |
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| 94. |
What is the function of epiglottis? |
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Answer» Epiglottis controls the movement of air and food towards their respective passages. |
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| 95. |
Why are alveoli so small and uncountable in number? (OR) How do alveoli increase the area for exchange of gases? |
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Answer» 1. The pouch-like air sacs at the ends of the smallest branchioles are called alveoli. 2. The walls of the alveolus are very thin and they are surrounded by very thin blood capillaries. 3. It is in the alveoli that gaseous exchange takes place. 4. There are millions of alveoli in the lungs. The presence of millions of alveoli in the lungs provides a very large area for the exchange of gases. 5. And the availability of large surface area maximises the exchanges of gases. |
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| 96. |
What is the role of diaphragm and ribs in respiration? Are both active in man and woman? |
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Answer» Diaphragm: 1. Diaphragm is a muscular dome shaped tissue present at the floor of the chest cavity separating abdomen from respiratory system. 2. Diaphragm expands downwards into the abdomen thus increasing chest cavity. This allows the lungs to expand as we inhale. 3. As the diaphragm contracts upwards thus decreasing the chest cavity, it allows the air to expel from the lungs. Ribs: 4. The ribs protect the lungs and expand as we inhale to facilitate space for the lungs to expand. The ribs then contract expelling the air from the lungs. 5. The intercostal muscles present between the ribs help in contraction and relaxation of ribs. 6. In man, diaphragm plays a major role in the respiration, while in woman, the ribs play a major role. |
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| 97. |
The ferric state of haemoglobin is called ……… |
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Answer» Methemoglobin. |
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| 98. |
Write short note on respiratory volumes. |
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Answer» Tidal Volume (TV) Tidal volume is the amount of air inspired or expired with each normal breath. It is approximately 500 mL., i.e. a normal human adult can inspire or expire approximately 6000 to 8000 mL of air per minute. During vigorous exercise, the tidal volume is about 4-10 times higher. Inspiratory Reserve volume (IRV) Additional volume of air a person can inspire by forceful inspiration is called Inspiratory Reserve Volume. The normal value is 2500-3000 mL. Expiratory Reserve volume (ERV) Additional volume of air a person can forcefully exhale by forceful expiration is called Expiratory Reserve Volume. The normal value is 1000-1100 mL. Residual Volume (RV) The volume of air remaining in the lungs after a forceful expiration. It is approximately 1100 – 1200 mL. |
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| 99. |
Haemoglobin belongs to the class of …………. |
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Answer» Conjugated protein. |
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| 100. |
The amount of air that moves into the respiratory passage per minute is called ……… |
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Answer» Minute respiratory volume. |
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