InterviewSolution
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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.
| 401. |
`O_(2)` dissociation curve is: |
| Answer» Correct Answer - Sigmoid curve | |
| 402. |
The dissociation curve is associated withA. OxygenB. OxyhaemoglobinC. Carbon dioxideD. Carbonic anhydrase |
| Answer» Correct Answer - b | |
| 403. |
Why is `O_(2)` gas passed from atmospheric air to alveoli ? |
| Answer» It is because the `pO_(2)` in atmospheric air is higher, I.e., 159 mm Hg than in alveoli, i.e., 104 mm Hg . | |
| 404. |
How does the lung-fish protopterus breathe during hibernation in mud ? |
| Answer» Protopterus has a double air-bladder which is highly vascular opens into the oesophagus and functions lung. Fish breather air with it during hibernation . | |
| 405. |
Oxygen carried by blood is liberated inA.  ArteriesB. Capillaries of bodyC. Capillaries of lungs D. Heart |
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Answer» Correct Answer - B Oxygen carried by blood is liberated in capillaries of body. |
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| 406. |
Oxygen carried by blood is liberated inA. arteriesB. capillars of bodyC. capillaries of lungsD. heart |
| Answer» Correct Answer - B | |
| 407. |
Which option is completely correct for the given statements Statement 1 - The nerve impluse ordered by respiratory centre passes through nerve to the diaphragm and the intercostal muscles and regulates respiration Statement 2 - Respiratory centres scatterly located in the brain stem gives of rhythmic stimuli to diaphragm and resiratory muscle and regulate respirationA. First statement is correct and second statement is wrongB. First statement is wrong and second statement is correctC. Both of the statements are wrongD. Both of the statements are correct |
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Answer» Correct Answer - d the nerve impulse ordered by respiratory centre passes through vagus nerve to the intercostal muscless and diaphragm and regulates respiration. The respiratory centres are scattered in brain stem and are constantly giving off rhymically stimuli to the respiratory muscless in virtue of their inherent rhythm causing inspiration and expiration. |
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| 408. |
The two organisms which breathe only through their moist skin areA. Frog and EarthwormsB. Fishand FrogC. Fishand EarthwormD. Leech and Earthworm |
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Answer» Correct Answer - D The two organisms which breathe only through their moist skin are leech and earthworm. |
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| 409. |
During cellular respiration the energy produced is stored in " " Or The common immediate source of energy in cellular activityA. ProtoplasmB. CytoplasmC. ATPD. Nucleus |
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Answer» Correct Answer - c in the from of phosphate bond energy. |
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| 410. |
Which is true?A. `H^(+)` ions released from carbonic acid combine with haemoglobin to form haemoglobinic acidB. oxyhamoglobin of ertyhrocytes is alkalineC. more than 70% of carbon diodxide is trnsferred form tissure to lungs as carbam in to compundsD. in healthy person haemglobin cont ent is more thant `25g / 100` ml |
| Answer» Correct Answer - A | |
| 411. |
A person has stopped breathing due to smoke inhalation. What should be immediately due and how ? |
| Answer» Mouth to mouth method of artificial respiration should be given to victim . | |
| 412. |
Which is the correct sequence of air passage during inhalation ?A. nasal caity `rarr` pharynx `rarr` trachea `rarr` larynx `rarr` bronchi `rarr` bronchioles `rarr` alveoliB. nasal cavity `rarr` pharynx `rarr` larynx `rarr` trachea `rarr` bronchi `rarr` bronchiloes `rarr` alveoliC. nasal vacity `rarr` larynx `rarr` pharynx `rarr` trachea `rarr` bronchi `rarr` bornchiloes `rarr` alveoliD. nasal vacity `rarr` larynx `rarr` bronchi `rarr` pharynx `rarr` trachea `rarr` bronchiloies `rarr` alveoli |
| Answer» Correct Answer - B | |
| 413. |
Lungs are not affected by the diseaseA. PneumoniaB. BronchitisC. PolioD. Asthma |
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Answer» Correct Answer - C Polio affects lower limbs. |
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| 414. |
All are the disease of lungs exceptA. asthmaB. bronchitisC. encephalitisD. pneumonia |
| Answer» Correct Answer - C | |
| 415. |
At higher altitudes, a man suffers much fromA. ColdB. Oxygen deficiencyC. Higher atmospheric pressureD. Ultraviolet radiations. |
| Answer» Correct Answer - B | |
| 416. |
With the increase of temperature, the respiratory rate willA. IncreaseB. Decrease rapidlyC. Remain unaffectedD. Decrease slowly. |
| Answer» Correct Answer - A | |
| 417. |
Haemoglobin of the human blood forms a stable complex compound with with of the following gas leading to death ?A. OxygenB. carbon dioxideC. carbon monoxideD. Nitrogen |
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Answer» Correct Answer - C 98.5% of `O_(2)` is transported by blood with the help of haemoglobin. The molecule of haemoglobin has 250 times more affinity with CO as compare to ` O_(2)` and thusm prevents `O_(2)` transport which leads to death. |
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| 418. |
Pleurisy is the disease ofA. LiverB. HeartC. LungsD. Kidneys . |
| Answer» Correct Answer - C | |
| 419. |
The partial pressure of oxygen in the alveoli of the lungs isA. equal to that in the bloodB. more than that in bloodC. less than in the bloodD. less than than of carbon dioxide |
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Answer» Correct Answer - B The partial pressure of oxygen `(pO_(2))` in alveoli of lungs is 104 mm Hg. Which is more than that of blood in the blood capillaries of lung alveoli ( 40 mm Hg). This difference allows passive diffusion of `O_(2)` from air filled in the lungs to the blood vessels of lung alveoli. |
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| 420. |
What percentages of `CO_(2)` is transported by RBCs ?A. 0.7B. 20-25%C. 0.07D. 0.97 |
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Answer» Correct Answer - B 20-25% percentages of `CO_(2)` is transported by RBCs. |
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| 421. |
Blood contains `CO_(2)` in which of the following formsA. `NaHCO_(3)`B. carbonic acidC. `Hb-CO_(2)`D. `Hb-CO_(2) and CO` |
| Answer» Correct Answer - A | |
| 422. |
Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled becauseA. there is a negative pressure in the lungsB. there is a negative intrapleurai pressure pulling at the lungs wallsC. there is a positive intrapleural pressureD. pressure in the lungs is higher than the atmospheric pressure |
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Answer» Correct Answer - B Lungs do not collapse between breaths and some air always remain in the lungs, which can be never expelled, because there is a negative inrapleural pressure pulling the lung walls. Alveoli are basic funcational unit of lungs. The outer alveolar wall surface have cells, which secrets DPPC also called as lipid surfactant. The surfactant expands the alveoli. Due to which the negative pressure inside the alveoli increase. this prevents the alveoli from collapsing . |
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| 423. |
what is the `._(p)O_(2) and ._(p)CO_(2)` in the systemic arteries ?A. `._(p)O_(2) " 40mm Hg, " ._(p)CO_(2)`. 45 mm HgB. `._(p)O_(2) " 95 mm Hg, " ._(p)CO_(2)`. 40 mm HgC. `._(p)O_(2) " 40mm Hg, " ._(p)CO_(2)`. 40 mm HgD. `._(p)O_(2) " 45 mm Hg, " ._(p)CO_(2)`. 40 mm Hg |
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Answer» Correct Answer - B `pO_(2)` in oxygenated blood ( 95 mm Hg) ` gt pO_(2)` in body cell ( 40 mm Hg) and `pCO_(2)` in oxygenated blood is 40 mm Hg of ` gt pCO_(2)` in body cells ( 45 mm Hg) during exchange of gases between blood and tissue. Therefore, is systematic arteries, ` pO_(2) " is" 95` mm Hg and `pCO_(2)` is 40 mm Hg. |
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| 424. |
Which of the following factors will decrease oxygenation ?A. High HbB. Increased blood flowC. AnemiaD. Increased blood volume |
| Answer» Correct Answer - C | |
| 425. |
Which statement is wrong ?A. The partial pressure of `CO_(2)(p_(CO_(2)))` is higher in the air inside the lungs than inside the venous blood.B. The partial pressure of `O_(2)(p_(O_(2)))` is higher in the air inside the lungs than in the arterial blood.C. The partial pressure of `O_(2)(p_(O_(2)))` is lower inside the venous blood than in the air in the lungD. The partial pressure of `CO_(2)(p_(CO_(2)))` is higher inside the venous blood than in the air. |
| Answer» Correct Answer - A | |
| 426. |
Respiration control center lies inA. PonsB. Medulla oblongataC. CerebrumD. Both (1) and (2) |
| Answer» Correct Answer - D | |
| 427. |
Which of the following controls the switch off point of inspiration ?A. Apneustic centerB. Pneumotaxic centerC. Pons varoliiD. Cerebrum |
| Answer» Correct Answer - B | |
| 428. |
During inspiration , air passes into lungs due toA. Increases in volume of thoratic cavity and fall in lung pressureB. fall in pressure inside the lungsC. increased volume of thoracic cavityD. muscular expansion of lungs |
| Answer» Correct Answer - A | |
| 429. |
in which animal , diaphragm has no rolde in respirationA. frogB. ratC. camelD. rabbit |
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Answer» Correct Answer - a Diaphragm has no role in the respiration in frog but in mammals it incease the surface area for repration. |
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| 430. |
the diaphragm in rabbit is aA. gap between the incisor and premolar teethB. membrane which surrounds and protects the brainC. membrance which lies between the external auditory meatus and tympanis carvity of the earD. partition of muscular septum separating the thoracic cavity from abdominal cavity |
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Answer» Correct Answer - d prsence of diapgragm I smammalian character, which is dome - shaped partition that separates the thoracic and abdominal cavities. |
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| 431. |
A person breathes in some volume of air by forced inspiration after having a forced expiration. This quantity of air taken in isA. Total lung capacityB. Tidal volumeC. Vital capacityD. Inspiratory capacity |
| Answer» Correct Answer - A | |
| 432. |
Forced deep breathing for a few minutes by a person sitting at rest may be followed by a temporary cessation of breathing. This is due toA. Little `CO_(2)` in bloodB. High `CO_(2)` content in bloodC. High oxygen content in bloodD. Little oxygen content in blood |
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Answer» Correct Answer - A Forced deep breathing during rest for some time is followed by temporary stoppage of breathing because of little `CO_(2)` in blood. |
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| 433. |
During inspirationA. Diaphragm and external intercostal muscles relaxB. Diaphragm and internal intercostal muscles relaxC. Diaphragm and external intercostal muscles contractD. Diaphragm and internal intercostal muscles contract |
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Answer» Correct Answer - C Inspiration is initiated by the contraction of diaphragm which increases the volume of thoracic chamber in the anterior-posterior axis. During inspiration diaphragm contract and become tiat. The contraction of external inter-coastal muscles lifts up the ribs and the sternum causing an increase in the volume of the thoracic chamber in the dorso-ventral axis. The overall increase in the thoracic volume causes a similar increase in pulmonary volume. An increase in pulmonary volume decreases the intra pulmonary pressure to less than the atmospheric pressure which forces the air from outside to move into the lungs, i.e. inspiration. |
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| 434. |
Forced deep breathing for a few minutes by a person sitting at rest may be followed by a temporary cessation of breathing. This is due toA. Little `Co_(2)` content in bloodB. High `CO_(2)` content in bloodC. High oxygen content in bloodD. Little oxygen content in blood |
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Answer» Correct Answer - A Forced deep breathing during rest for some time is followed by temporary stoppage of breathing because of little `CO_(2)` in blood. |
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| 435. |
During winter a person died during sleep, the room was closed and a container with burnt charcoal was found in the room. What may be the possible reason of his death ?A. Non-availability of oxygenB. Hb has more affinity to combine with carbon monoxideC. Hb has more affinity to combine with carbon dioxideD. Combined effect of both (a) and (c) |
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Answer» Correct Answer - B Charcoal on burning produces carbon monoxide `(CO)`. `CO` has about `200` times more affinity for Hb than `O_(2)`. In combining with `Hb`, it forms a stable compound carboxyhaemoglobin. Because of this compound, Hb connot carry sufficient `O_(2)` to the tissus ultimately leading to death. |
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| 436. |
the largest quantity of air that can be expired after a maximum inspiratory effort isA. Residual volumeB. Tidal volumeC. Vital capacityD. Lung volume |
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Answer» Correct Answer - C The maximum volume of air a person can breath in after a forced expiration. This includes ERV, TV and IRV or the maximum volume of air a person can breathe out after a forced inspiration. |
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| 437. |
Lipied surfactant called dipalmitoyl phosphatidylcholine is sectreted byA. flat squamous cell of alveoliB. granular pneumochtes of alveoliC. both (a) and (b)D. None of the above |
| Answer» Correct Answer - B | |
| 438. |
The difference between right and left lung isA. right lung has two fissures and left has oneB. right lung is longer than the left lungC. right lung a pink in colour and left lung is transparentD. None of the above |
| Answer» Correct Answer - A | |
| 439. |
How can a person prevents himself from occupational respiratory diseases ? |
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Answer» (i) By wearing protective masks. (ii) By avoiding prolonged exposure to harmful substances. |
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| 440. |
Which is true ?A. `PcO_(2)` of deocygenated blood is 95 mm hgB. `Pco_(2)` of alveolar air is 40 mm HgC. `Pco_(2)` of oxygenated blood is 95 mm HgD. `Pco_(2)` of deoxygneated blood is 40 mm Hg |
| Answer» Correct Answer - B | |
| 441. |
Which of the following statements are true/false A.The blood transports `CO_(2)` comparatively easily because of its higher solubility B.Approximately 8.9% of `CO_(2)` is transported being dissovled in the plasma of blood C. The carbon dioxide produced by the tissues, diffuses passively into the blood stream and passes into red blood corpsucles and react with water to form `H_(2)CO_(3)` D.The chlorde ions diffuse from palsma into the erythrocytes to maintain ionic balanceA. A,C and D are true, B is falseB. A,C and D are false, B is trueC. A, B and D are C is flaseD. A, B and D are false, C is false |
| Answer» Correct Answer - a | |
| 442. |
Which of the following statements are true/false A.The blood transports `CO_(2)` comparatively easily because of its higher solubility B.Approximately 8.9% of `CO_(2)` is transported being dissovled in the plasma of blood C. The carbon dioxide produced by the tissues, diffuses passively into the blood stream and passes into red blood corpsucles and react with water to form `H_(2)CO_(3)` D.The chlorde ions diffuse from palsma into the erythrocytes to maintain ionic balanceA. (i) , (iii) and (v) are ture (ii) and (iv) are falseB. (i) , (iii) adnd (v)are false (ii) and (iv) are trueC. (i), (ii) and (iv) ar ture (iii) and (v) are falseD. (i) ,(ii) and (iv) are false (iii) and (v) are ture |
| Answer» Correct Answer - A | |
| 443. |
Solubility of `CO_(2)` is ________ times higher than that of `O_(2)`A. 40 - 45B. 20 - 25C. 100 - 200D. 200 - 300 |
| Answer» Correct Answer - B | |
| 444. |
Muscles contains a red coloured oxygen storing pigment called `:-`A. Haemoglobin combines with co instead of with `O_(2)` and product cannot dissociateB. myoglobinC. erythrocruorinD. hemolymph |
| Answer» Correct Answer - B | |
| 445. |
what is true about haemoglobinA. It is a dipeptide and present in red blood corpuscles in warm bloodB. It is dipeptide in mammals and localised in red blood corpusclesC. it is present in the dissolved state in blood plasma in scorpionsD. It is present in dissolved state in blood plasma in scorpions |
| Answer» Correct Answer - C | |
| 446. |
Assertion: Respiratory gas exchange occurs through osmosis. Reason: Respiratory gas goes from lower partial pressure region to the region of higher partial pressure.A. If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.B. If both Assertion and Reason are true ,but the Reason is not the correct explanation of the Assertion.C. If Assertion is true, but Reason is falseD. If both Assertion and Reason are false. |
| Answer» Correct Answer - D | |
| 447. |
Which form of iro is foud in haemoglobin ?A. `fe^(2+)`B. `fe^(3+)`C. in the form of moleculeD. in the form of feO |
| Answer» Correct Answer - A | |
| 448. |
The precentage of haemoglobin satureated with oxygen will increase if theA. arterial pH is decreasedB. temperature is incrasedC. arterial `P_(2)` is incrasedD. `CO_(2)` concentration is increased |
| Answer» Correct Answer - C | |
| 449. |
Percentage of oxygen supplied by haemoglobin isA. 0.03B. 0.7C. 0.97D. 1 |
| Answer» Correct Answer - C | |
| 450. |
Carboxyhaemoglobin complex results due to this pollutant:A. `CO_(2)`B. `CO`C. `H_(2)CO_(3)`D. `SO_(2)` |
| Answer» Correct Answer - B | |