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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.
| 251. |
What would happen if human blood becomes acidic ( low pH) ?A. WBC count increasesB. RBC count decreasesC. oxygen carrying capacity of haemoglobin increasesD. oxygen carrying capacity of haemoglobin decreases |
| Answer» Correct Answer - D | |
| 252. |
Gas which is released during catabolic reaction of respiration is_____ |
| Answer» Correct Answer - `CO_(2)` | |
| 253. |
The respiratory centre in meddulla may release motor impluses for faster breathing dur toA. venous blood leaving itB. arterial blood leaving itC. venous blood entering into itD. arterial blood entering into it |
| Answer» Correct Answer - D | |
| 254. |
Outer pleural membrane is in close contant withA. Surface of lungsB. Thoracic cavityC. Both (1) and (2)D. Alveoli |
| Answer» Correct Answer - B | |
| 255. |
The volume of air present in the lungs after forceful expiration is called asA. Tidal volumeB. Residual airC. Complementary airD. None |
| Answer» Correct Answer - b | |
| 256. |
Assertion. Earthworms come out of their burrows on rainy days . Reason . Rain water fills their burrows depriving them of `O_(2)`A. If both A and R are true and R is the correct explanation of A.B. If both A and R are true but R is not the correct explanation of AC. if A is true but R is false.D. If both A and R are false. |
| Answer» Correct Answer - A | |
| 257. |
At which level of thoracic vertebra, trachea dividesA. `2^(nd)` thoracic vertebraB. `5^(th)` thoracic vertebraC. `3^(rd)` thoracic vertebraD. `4^(th)` thoracic vertebra |
| Answer» Correct Answer - B | |
| 258. |
Reduction in pH of blood willA. reduce the blood supply to the brianB. decrease the affinity of hemoglobin with oxygenC. release bicarbonate ions by the liverD. reduce the rate of heart beat |
| Answer» Correct Answer - B | |
| 259. |
Name the chronic respiratory disorder caused mainly by cigarette smokingA. EmphysemaB. AsthmaC. Respiratory acidosisD. Respiratory alkalosis |
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Answer» Correct Answer - A Emphysema is the chronic respiratory disorder caused mainly by cigarette smoking. |
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| 260. |
Read the following statement about human respiration ltbgt (i) trachea divides at the level of 6th thoracic vertebra (ii) terminal bronchioles alveoli and their ducts form the respiratory part of this system (iii) contractionof diaphragm increases volume of thoracic chamber doosoven trally (iv) the internal intercostals help in inspirationA. all except (iv) are trueB. only (iii) and (iv) are falseC. only (i) is trueD. none is true |
| Answer» Correct Answer - D | |
| 261. |
Trachea is a straight tube extending uh to the mid-thoracic cavity, which divides at the level ofA. Last thoracic vertebra into right and left 1° bronchiB. Third lumbar vertebra into tight and left 1° bronchioleC. Fifth thoracic vertebra into right and left 1° bronchioleD. Fifth thoracic vertebra into right and left `1^(@)` bronchi |
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Answer» Correct Answer - D Â Trachea is a straight tube extending up to the midthoracic cavity, which divides at the level of fifth thoracic vertebra into right and left `1^(@)` bronchi. |
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| 262. |
Trachea is a straight tube extending up to the mid-thoracic cavity, which divides at the level ofA. `2^(nd)` cervical vertebraB. `5^(th)` cervical vertebraC. `5^(th)` thoracic vertebreD. `5^(th)` lumbar vertebra |
| Answer» Correct Answer - C | |
| 263. |
Utilisation of `O_(2)` by the cells for catabolic reactions and resultant release of `CO_(2)` is calledA. BreathingB. Pulmonary ventilationC. Cellular respirationD. Both A and B |
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Answer» Correct Answer - C Utilisation of `O_(2)` by the cells for catabolic reactions and resultant release of `CO_(2)` is called cellular respiration. |
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| 264. |
Trachea is a straight tube extending up to the mid-thoracic cavity, which divides at the level ofA. Second cervical vertebraB. Fifth cervical vertebraC. Fifth thoraic vertebraD. Fifth lumbar vertebra. |
| Answer» Correct Answer - C | |
| 265. |
Statement 1 : Respiration is most efficient in the insects, among the invertebrates. Statement 2 : In the insects, air is carried directly to the cells by tracheoles.A. Both statement 1 and 2 correct.B. Statement 1 is correct but statement 2 is incorrect.C. Statement 1 is incorrect but statement 2 is correct.D. Both statement 1 and 2 incorrect. |
| Answer» Correct Answer - A | |
| 266. |
Respiration in insects Is called direct becauseA. The tissues exchange `O_(2)//CO_(2)` directly with the air in the tubesB. The tissues exchange `O_(2)//CO_(2)` directly with coelomic fluidC. The tissues exchange `O_(2)//CO_(2)` directly with the air outside through body surfaceD. Tracheal tubes exchange `O_(2)//CO_(2)` directly with the haemocoel which then exchange with tissues |
| Answer» Correct Answer - d | |
| 267. |
Arrange the following in an ascending order of volume 1 expiratory reserve volume 2 inspiratory capacity 3 tidal volume 4 residual volumeA. `(iii) lt (i) lt (iv) lt (ii)`B. `(iv) lt (i) lt (iii) lt (ii)`C. `(iv) lt (ii) lt (i) lt (iii)`D. `(iii) lt (iv) lt (ii) lt (i)` |
| Answer» Correct Answer - A | |
| 268. |
Concentration of carbonic acid does not increase in blood due to the presence ofA. `Na^(+)`B. `K^(+)`C. `Ca^(++)`D. `Mg^(++)` |
| Answer» Correct Answer - a | |
| 269. |
Under a given concentration in blood, dissociation of oxygaemoglobin will increase ifA. pH of blood fallsB. pH of blood risesC. `CO_(2)` concetration in blood fallsD. free fatty acid concentration in blood falls |
| Answer» Correct Answer - A | |
| 270. |
Under a given concentration in blood, dissociation of oxygaemoglobin will increase ifA. pH of blood fallsB. pH of blood risesC. `CO_(2)` concentration in blood fallsD. Free fatty acid concentration in blood falls |
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Answer» Correct Answer - a under a given oxygen concentration in blood , dissociation of oxygaemoglobin will increase if pH of blood falls. |
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| 271. |
Under a given concentration in blood, dissociation of oxygaemoglobin will increase ifA. pH of blood risesB. pH of blood fallsC. `CO_(2)` concentration of blood fallsD. Free fatty acid concentration of blood falls |
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Answer» Correct Answer - B See Answer for Q.85. Right shifting indicates dissociation of `O_(2)` from Hb. |
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| 272. |
Respiration in insects Is called direct becauseA. the tissues exchange `O_2//CO_2` directly with the air in the tubesB. the tissues exchange `O_2//CO_2` directly with coelomic fluidC. the tissues exchange `O_2//CO_2` directly with the air outside through body sur- faceD. tracheal tubes exchange`O_2//CO_2` directly with the haemocoel which then ex- change with tissues |
| Answer» Correct Answer - d | |
| 273. |
Assertion : The role of oxygen in the regulation of respiratory rhythm is quite insignificant. Reason : Increased `PCO_(2)` and `H^(+)` concentration inputs from chemoreceptors can activate respirotory rhytm centre to make necessary adjustments.A. If both assertion and reason are true and reason is the correct explanation of assertionB. If both assertion and reason are true and reason is not the correct explanation of assertionC. If assertion is true but reason is false.D. If both assertion and reason are false. |
| Answer» Correct Answer - A | |
| 274. |
Name the chronic respiratory disorder caused mainly by cigarette smokingA. asthmaB. respiratory acidosisC. respiratory alkalosisD. emphysema |
| Answer» Correct Answer - D | |
| 275. |
Increase in concentration of bicarbonated in blood plasam would result in increasedA. ventilation of lungsB. urinationC. ultrafiltrationD. salivation |
| Answer» Correct Answer - A | |
| 276. |
Assertion. Respiration is most efficient in the insects. Reason . In the insects air is carried directly to the cells by tracheoles |
| Answer» Correct Answer - A | |
| 277. |
Match column I with column II and select the correct option from the codes given below. `{:(,"Column I",,"Column II"),(A.,"Tracheoles",(i),"Yeast"),(B.,"Carbonic anhydrase",(ii),"Fish"),(C.,"Lactic acid",(iii),"Inspiration"),(D.,"Fermentation",(iv),"Vital capacity"),(E.,"Gill filaments",(v),"Fast muscle"),(F.,"Cutaneous respiration",(vi),"Insert"),(G.,"Diaphragm",(vii),"Bicarbonates"),(,,(viii),"Earthworm"):}`A. `A-(vi), B-(vii), C-(v), D-(i), E-(ii), F-(vii), G-(iii)`B. `A-(viii), B-(iv), C-(vii), D-(i), E-(iii), F-(ii), G-(v)`C. `A-(vi), B-(i), C-(ii), D-(v), E-(iv), F-(viii), G-(iii)`D. `A-(viii), B-(vii), C-(i), D-(iv), E-(ii), F-(vi), G-(v)` |
| Answer» Correct Answer - A | |
| 278. |
Read the following statements (i) the point of bifurcation of trachea is called carina and is at the level of 5th thoracic vertiebra (ii)the right bronchus is shorter iwder and more in line with trachea than the let bronchus (iii) the bronchioles are without cartilaginous rings (iv) the surfactant of lungs is secrated in infants between 6th and 7th month o flife which of these are correct ?A. I,ii & iiiB. ii , iii & ivC. I, iii & ivD. all are correct |
| Answer» Correct Answer - A | |
| 279. |
Name the pulmonary disease in which alveolar surface area involved in gas exchange is drastically reduced due to damage in the alveolar wallsA. AsthmaB. pleurisyC. EmphysemaD. Pneumonia |
| Answer» Correct Answer - C | |
| 280. |
Name the pulmonary disease in which alveolar surface area involved in gas exchange is drastically redsuced due to damage in the alveolar wallsA. pleurisyB. emphysemaC. pneumoniaD. asthma |
| Answer» Correct Answer - B | |
| 281. |
The correct statement about respiration are (i) In cockroach gaseous exchange occurs mainly between tracheoles and haemolymph (ii) increase in inspiratory capacity does not involve an incrase in tidal volume (iii) partial pressure of oxygen in blood is less than that in alveoli (iv) chloride shift in ertyrocytes maintain the ionic ablanceA. I and iiB. I iii and ivC. I ii andivD. ii and iii |
| Answer» Correct Answer - B | |
| 282. |
During inspiration the diaphragmA. Relaxes to become dome -shapedB. contracts and flattensC. ExpandsD. Shows no change |
| Answer» Correct Answer - B | |
| 283. |
During expiration, the diaphragm becomesA. FlsttenedB. RelaxedC. StraightenedD. Arched/Dome-shaoed |
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Answer» Correct Answer - D In expiration, diaphragm becomes arched/domeshaped. |
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| 284. |
The primary sites ofthe gaseous exchange areA. TracheolesB. AlveoliC. BronchiolesD. Pulmonary chambers. |
| Answer» Correct Answer - B | |
| 285. |
Assertion : A sigmoid curve is obtained when percentage saturation of haemoglobin with `O_(2)` is plotted against the `PO_(2)`. Reason : Every `100` mL of oxygenated blood can deliver around `5mL` of `O_(2)` to the tissues under normal physiological conditions.A. If both assertion and reason are true and reason is the correct explanation of assertionB. If both assertion and reason are true and reason is not the correct explanation of assertionC. If assertion is true but reason is false.D. If both assertion and reason are false. |
| Answer» Correct Answer - B | |
| 286. |
In expiration condition, diaphragms becomesA. CircularB. RelaxedC. Fully contractedD. Expanded |
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Answer» Correct Answer - b During expiration diaphragm relaxes and becomes dome - shaped thereby reducting intrathoracic volume to pass out the air from body. |
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| 287. |
Which of the following activity does not take place during pulmonary respirationA. Movement of buccal cavityB. Contraction and relaxation of sternohyal and pterohyal musclesC. Successive opening and closing of mouth and external nostrilsD. All the above |
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Answer» Correct Answer - c During pulmonary respiration mouth remains closed all the time whereas nostrills are opened only when air is taken in or passed out i.e during first stroke of inspiration and second stroke of expiration respectively. |
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| 288. |
I. The `pO_(2)` in alveolar air is about ….A…. Mm Hg and in arterial capillaries is …..B…… mm Hg. Therefore, oxygen from alveoli diffuses into blood capillaries. II. ` pCO_(2)` in blood reaching alveolar capillaries is …..C…. Mm Hg and in alveolar air is .....D..... mm Hg. thus, `CO_(2)` leaves capillaries and reaches alveoli. Identify A,B,C and D in the above two statements .A. 104, 40, 45, 40B. 40 , 104, 40, 45C. 40, 45, 104, 40D. 45, 104, 45, 40 |
| Answer» Correct Answer - A | |
| 289. |
In Fig. 17.14, identify what is depicted by A,B and C. Choose the correct options : A. A-i,B-ii,C-iiiB. A-ii,B-iii,C-iC. A-i,B-iii,C-iiD. A-ii,B-i,C-iii |
| Answer» Correct Answer - D | |
| 290. |
Respiration without a distinct respiratory organ occurs inA. FishB. CockroachC. TadpoleD. Earthworm |
| Answer» Correct Answer - D | |
| 291. |
In lungs there is definiteexchange of ions between RBC and plasma. Removal of `CO_(2)` from blood involvesA. Influx of `C1^(-)` into RBCB. Efflux of `Cl^(-)` from RBCC. Intiux of `HCO_(3)^(-)` ions in RBCD. Efflux-of `HCO_(3)^(-)` ions from RBC |
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Answer» Correct Answer - D See Answer for Q.87. |
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| 292. |
Assertion: The diffusion membrane is made up of three major layers namely, the thin squamous epithelium of alveoli, the endothelium of alveolar capillaries and the basement membrane in between Reason: The total thickness of the diffusion membrane is much greater than a millimetre.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 reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false. |
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Answer» Correct Answer - D The diffusion membrane is made up of three major layers namely, the thin squamous epithelium of alveoli, the endothelium of alveolar capillaries and the basement substance in between. The total thickness of the diffusion membrane is much less than a millimeter. |
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| 293. |
In lungs there is definiteexchange of ions between RBC and plasma. Removal of `CO_(2)` from blood involvesA. Influx of `Cl^(-)` ions into RBCB. Influx of `HCO_(3)^(-)` into RBCC. Efflux of `Cl^(-)` ions from RBCD. Efflux of `HCO_(3)^(-)` ions form RBC |
| Answer» Correct Answer - D | |
| 294. |
The factor which does not affect the rate of alveolar diffusion is A. solubility of gasesB. thickness of the membranesC. pressure gradientD. reactivity of the gases. |
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Answer» Correct Answer - D `O_(2)` and `CO_(2)` are exchanged in the alveoli by simple diffusion. The factors that affect the diffusion are pressure gradient of the gases, solubility of the gases and the thickness of the membranes involved in diffusion. |
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| 295. |
Besides RBC, blood plasma also carries `O_(2)` in solution. The percentage isA. `3-9%`B. `1-2%`C. `3-6%`D. `2-3%` |
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Answer» Correct Answer - D About `3%` of oxygen in blood is dissolved in the plasma which carries oxygen to the body cells. |
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| 296. |
Respiratory process is regulated by certain specialized centres in the brain. One of the following listed centres can reduce the inspiratory duration upon stimulationA. Medullary inspiratoryB. Pneumotaxic centreC. Apneustic centreD. Chemosensitive centre |
| Answer» Correct Answer - B | |
| 297. |
Respiratory process is regulated by certain specialized centres in the brain. One of the following listed centres can reduce the inspiratory duration upon stimulationA. Medullary inspiratory centreB. Pneumotaxic centreC. Apneustic centreD. Chemosensitive centre |
| Answer» Correct Answer - B | |
| 298. |
What is the main site of human respiratory system where exchange of gases occurs?A. AlveoliB. BronchioleC. Primary and secondary bronchiD. Trachea |
| Answer» Correct Answer - A | |
| 299. |
Which is the primary site for exchange of gases ? |
| Answer» Correct Answer - Alveoli | |
| 300. |
A: 100 ml of venous blood has 14.4 ml of `O_(2)` i.e., it is still 75% saturated with oxygen in normal condition. R: About 4.6 ml of `O_(2)` i.e. 25% diffuses from arterial blood into the tissue during exercise.A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)B. If both Assertion & Reason are trye but the reason is not the correct explanation of the assertion , then mark (2)C. If Assertion is true statement but Reason is fakse, then mark (3)D. If both Assertion and Reason are false statements, then mark (4) |
| Answer» Correct Answer - C | |