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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.
| 351. |
What is the main difference between respiration and combustion? |
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Answer» In respiration several intermediates are produced and in combustion, there are no such intermediates are produced. |
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| 352. |
Name the person who told “Respiration is similar to combustion” 1. Robinson 2. Lavoisier A) 1 B) 2 C) 1 & 2 D) Both are false |
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Answer» Answer is (C) 1 & 2 |
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| 353. |
The correct equation of aerobic respiration isA. `C_(6)H_(8)O_(4)rarr6CO_(2)_4H_(2)O`B. `C_(6)H_(12)O_(6)+6O_(2)rarr6CO_(2)+6H_(2)O`C. `C_(6)H_(12)O_(6)+6O_(2)+6H_(2)Orarr6CO_(2)+12H_(2)O+686` kcalD. `C_(2)H_(5)OH+3O_(2)rarr2CO_(3)+3H_(2)O` |
| Answer» Correct Answer - C | |
| 354. |
Cytochrome which hands over electrons to oxygen during terminal oxidation isA. Cyt bB. Cyt aC. Cyt cD. `Cyt a_(3)` |
| Answer» Correct Answer - D | |
| 355. |
Terminal oxidation comprisesA. Synthesis of metabolic waterB. Electron transportC. Oxidative phosphorylationD. All the above |
| Answer» Correct Answer - D | |
| 356. |
Formation of ATP in respiration is calledA. PhotophosphorylationB. Substrate phosphorylationC. Oxidative phosphorylationD. Phosphorylation |
| Answer» Correct Answer - C | |
| 357. |
Chemicals taking part in respiratory electron transport areA. Flavin nucleotidesB. FeS and CoQC. CytochromesD. All the above |
| Answer» Correct Answer - A | |
| 358. |
Noncytochrome members of respiratory electron transport chain areA. `FAD, NAD^(+)" and CoQ`B. `FMN, FeS and CoQC. FAD, FeS and CoQD. `NAD^(+), FMN" and CoQ` |
| Answer» Correct Answer - B | |
| 359. |
Out of 36 ATP molecules produced per glucose molecule during respirationA. 2 are produced outside glycolysis and 34 during respiratory chainB. 2 are produced outside mitochondira and 34 inside mitochondiraC. 2 during glycolysis and 34 during Krebs cycleD. All are formed inside mitochondria. |
| Answer» Correct Answer - B | |
| 360. |
The last or ultimate electron acceptor in the electron transport system isA. Cytochrome cB. Cytochrome `a_(3)`C. Cytochrome bD. `NADPH_(2)` |
| Answer» Correct Answer - B | |
| 361. |
Given below are some reactions and the enzymes involved. Identify the correct pairs. A. 1-d, 2-c. 3-b, 4-aB. 1-a, 2-b, 3-c, 4-dC. 1-b, 2-a, 3-d, 4-cD. 1-c, 2-d, 3-a, 4-b |
| Answer» Correct Answer - A | |
| 362. |
Which one of the following electron acceptor is present in respiratory chainA. Cytochrome fB. Cytochrome `a_(3)`C. PlastocyaninD. Ferredoxin. |
| Answer» Correct Answer - B | |
| 363. |
The energy released by ATP on hydrolysis is ………….A. 7.6 kcalB. 7.3 kcalC. 7 kcalD. 6.8 kcal |
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Answer» Correct Answer - B |
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| 364. |
Link reaction of respiration occurs in ………..A. CytoplasmB. MitochondriaC. peroxisomeD. protoplasm |
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Answer» Correct Answer - B |
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| 365. |
In what compound, the energy released during the breakdown of glucose is stored? |
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Answer» “ATP” (Adenosine Triphosphate). |
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| 366. |
What do you know about transition reaction? |
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Answer» In aerobic respiration the pyruvate with coenzyme A is oxidatively decarboxylated into acetyl CoA by pyruvate dehydrogenase complex. This reaction is irreversible and produces two molecules of NADH + H+ and 2CO2 . It is also called transition reaction or Link reaction. |
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| 367. |
Who is Sir Hans Adolf Krebs? |
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Answer» Sir Hans Adolf Krebs was born in Germany on 25th August 1900. He was awarded Nobel Prize for his discovery of Citric acid cycle in Physiology in 1953. |
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| 368. |
Some desert beetles can survive on 'metabolic water' without ever drinking liquid water whichA. Was produced as water in the organisms they eatB. Is absorbed from the air alongwith respiratory oxygenC. Is a breakdown product of pyruvate inside the mitochondria alongwith `CO_(2)`D. Is a breakdown product from glycolsis in the cytoplasm. |
| Answer» Correct Answer - C | |
| 369. |
The only process which gives energy for all metabolic activities ………A) Photosynthesis B) Cellular respiration C) Combustion D) Fermentation |
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Answer» B) Cellular respiration |
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| 370. |
Lactic acid is produced quite often in humanA. Red musclesB. Cardiac musclesC. Involutary musclesD. White muscles. |
| Answer» Correct Answer - A | |
| 371. |
Extinction points isA. Atomospheric oxygen where fire gets automatically extinguishedB. Concentration of oxygen below which aerobic respiration stopsC. Light intensity below which plant will not surviveD. Both B and C |
| Answer» Correct Answer - A | |
| 372. |
R.Q. can vary due toA. TemperatureB. Respiratory substrateC. Light and oxygenD. Respiratory product. |
| Answer» Correct Answer - B | |
| 373. |
Enzyme helping in oxidatvie decarboxylation of pyruvic acid isA. Pyruvic KinaseB. Pyruvic dehydrogenaseC. Malate dehydrogenaseD. Succinic dehydrogenase. |
| Answer» Correct Answer - B | |
| 374. |
Observe the above graph of lactic acid accumulation in the muscles of an athlete and answer the following questions. a) What was the concentration of lactic acid in the blood to start with? b) What was the greatest concentration reached during the experiment? c) If the trend between points C and D were to continue at the same rate, how long might it take for the original lactic acid level to be reached once again?d) What does high level of lactic acid indicate about the condition of respiration? |
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Answer» a) It is 20 mg/km3 b) 101 mg/cm3 c) 55 minutes. d) It indicates the accumulation of lactic acid in muscles through anaerobic respiration. The presence of lactic acid in the blood is the main cause of muscular pain and fatigue. |
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| 375. |
Krebs cycle is component ofA. PhotosynthesisB. Aerobic respirationC. Anaerobic respirationD. Photorespiration |
| Answer» Correct Answer - B | |
| 376. |
Study the graph given below and analyse the reasons for accumulation of lactic acid in blood after strenuous exercise.Athlete (Strenous excerise)Graph showing effects of vigorus excerise on the concentration of lactic acid in blood |
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Answer» 1. This graph shows the relation between time accumulation of lactic acid in the muscles. 2. At the beginning, the amount of lactic acid in the blood is very less. 3. Gradually it is increased by vigorous exercise. 4. Within 15 minutes it goes to maximum level which causes muscle pain. 5. Then the lactic acid is removed from muscles in an hour. 6. Muscles produce energy by anaerobic respiration. C6 H12 O6 → lactic acid + CO2 + energy 7. In the vigorous exercise, muscle work rapidly and produce more lactic acid. 8. That’s why lactic acid concentration is increased in muscle after strenuous exercise. |
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| 377. |
For undergoing glycolysis, glucose requires priming with the help of ATPA. 1B. 2C. 3D. 4 |
| Answer» Correct Answer - B | |
| 378. |
Fumarase changes fumaric acid intoA. Malic acidB. Maleic acidC. Citric acid,D. Succinic acid. |
| Answer» Correct Answer - A | |
| 379. |
Find the odd one out. A) Ethanol B) Lactic acidC) Yeast D) Saliva |
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Answer» Answer is (D) Saliva |
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| 380. |
Arrange the following compounds formed in respiration based on their C-atoms : (i) Pyruvic acid (ii) `alpha`-Ketoglutaric acid (iii) Citric acid (iv) Malic acidA. iv, I, ii, iiiB. I, iv, ii, iiiC. I, ii, iv, iiiD. I, iv, iii, ii. |
| Answer» Correct Answer - B | |
| 381. |
R.Q. is maximum when respiratory substrate isA. GlucoseB. FatC. ProteinD. Malic acid. |
| Answer» Correct Answer - D | |
| 382. |
For two molecules of glucose, glycolysis uses and produces ATP moleculesA. 4 and 8B. 2 and 4C. 2 and 8D. 2 and 2 |
| Answer» Correct Answer - A | |
| 383. |
Which one is product of aerobic respirationA. Malic acidB. Ethyl alcoholC. Lactic acidD. Pyruvic acid. |
| Answer» Correct Answer - A | |
| 384. |
Enzymes of oxidative phosphorylation occur inA. Endoplasmic reticulumB. ChloroplastsC. MitochondriaD. Golgi apparatus. |
| Answer» Correct Answer - C | |
| 385. |
R.Q. of malic acid isA. 1.3B. 4C. 0.7D. 1 |
| Answer» Correct Answer - A | |
| 386. |
Why is pneumonia considered a dangerous disease? |
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Answer» Inflammation of the lungs due to infection caused by bacteria or virus is called pneumonia. The symptoms are sputum production, nasal congestion, shortness of breath, sore throat etc. The alveoli get filled with fluid or pus, making is difficult to breathe (lung abscesses). |
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| 387. |
How the body makes long-term adjustments when living in high altitude? |
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Answer» When a person lives in higher altitude, the body makes respiratory and hematopoietic . adjustment. Kidneys accelerate the production of the hormone erythropoietin which stimulate the bone marrow to produce more RBCs. This improves the binding of O2 with haemoglobin. |
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| 388. |
Resistance in the airways is typically low. Why? Give two reasons. |
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Answer» The airway resistance is low because:
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| 389. |
The increase in the nitrogen content in blood heads to a condition called … |
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Answer» Nitrogen narcosis. |
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| 390. |
The skin turns bluish black during poisoning. |
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Answer» Carbon dioxide. |
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| 391. |
GlycolysisA. Occurs in mitochondriaB. Has no connection with ETCC. Reduces 2 molecules of `NAD^(+)` per glucoseD. |
| Answer» Correct Answer - C | |
| 392. |
Which of the following minerals activate the enzymes involved in respiration?A. N and PB. Mg and MnC. K and CaD. S and Fe |
| Answer» Correct Answer - B | |
| 393. |
Which of the following respiratory substances requires the highest number of `O_(2)` molecules for its complete oxidaiton.A. TrioleinB. Oleic acidC. TripalmitinD. Tartaric acid. |
| Answer» Correct Answer - A | |
| 394. |
When the respiratory substances are more than one then which respiratory substrates are not usedA. Pure proteinB. LipidC. CarbohydrateD. Both A and B |
| Answer» Correct Answer - D | |
| 395. |
In glycolysis ultimately (or end product of glycolysis is)A. Protein is converted into glucoseB. Glucose is converted into glycogenC. Starch is converted into glucoseD. Glucose is converted into pyruvic acid. |
| Answer» Correct Answer - D | |
| 396. |
Heart enoveld during respirationa) What is the aim of this experiment?b) What change do you observe in thermometer readings?c) In your opinion, where did this heat come from?d) What precaution should we take, while doing this experiment? |
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Answer» a) Heat is liberated during respiration. b) Reading increases in the thermometer. c) The heat comes from the germinating seeds which respire and releasing heat. d) The bulb of the thermometer should be dip in the germinating seeds (or) sprouts. |
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| 397. |
Look at the following experiment. Answer the questions.Testing for prouduction of heat and CO2 under anaerobic respiration a) What is the aim of the experiment?b) Which agent is used to find the presence of oxygen? What changes do you observe when oxygen is present in Glucose solution?c) Why is liquid paraffin poured on glucose solution?d) Which gas is released during the experiment? How can you prove it? |
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Answer» a) The aim of the experiment is CO2 is released during anaerobic respiration. b) To find the presence of oxygen diazine green (Janus Green B) solution is used. The blue diazine green solution turns pink when oxygen is present in the glucose solution. c) By pouring liquid paraffin on glucose solution, the supply of oxygen from the air can be cut off. d) Carbon dioxide is released. The released CO2 passes into lime water it turns milky. |
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| 398. |
Which of the following is correct ?i) The diaphragm contracts – volume of chest cavity increased ii) The diaphragm contracts – volume of chest cavity decreased iii) The diaphragm expands – volume of chest cavity increased iv) The diaphragm expands – volume of chest cavity decreasedA) iB) i and iiC) ii and iiiD) iv |
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Answer» Correct option is (A) i) The diaphragm contracts – volume of chest cavity increased |
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| 399. |
Oxidative phosphorylation is found inA. ChloroplastsB. LeucoplastsC. PeroxisomesD. Mitochondria |
| Answer» Correct Answer - D | |
| 400. |
R.Q. is less than one when the respiratory substrate isA. SucroseB. FatC. GlucoseD. Less than one |
| Answer» Correct Answer - B | |