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.
| 801. |
Ahigher `CO_(2)` concentration of blood causesA. Slow diffusion of `O_(2)` from bloodB. Slow transport of `O_(2)` in bloodC. Quick diffusion of `O_(2)` from bloodD. Both A and B |
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Answer» Correct Answer - C In the tissues, where low `pO_(2)`, high `pCO_(2)`, high `H^(+)` concentration and higher temperatureexist, the conditions are favourable for dissociation of oxygen from the oxyhaemoglobin. A higher `CO_(2)` concentration of blood causes quick diffusion of `O_(2)` from blood. |
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| 802. |
During forced expiration , actively contracting musclesA. DiaphragmB. External intercostalsC. Abdomial musclesD. Diaphragm and intestinal muscle |
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Answer» Correct Answer - c in forced expiration internal intercostal muscles and some abdominal muscless contract to reduce the volume of thorax. |
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| 803. |
During forced expiration , actively contracting musclesA. diaphragmB. external intercostalsC. abdominal muclesD. diaphragm and intestinal muscles |
| Answer» Correct Answer - C | |
| 804. |
During forced expiration , actively contracting musclesA. diaphragmB. external intercostalsC. abdominal musclesD. all of these |
| Answer» Correct Answer - C | |
| 805. |
Which muscles help us to increase the strength of expiration?A. Cardiac musclesB. Abdominal musclesC. Internal intercostal musclesD. Both (2) & (3) |
| Answer» Correct Answer - D | |
| 806. |
The breathing rate of a normal healthy man isA. 8- 18 times/minB. 6- 12 times/minC. 10- 24 times/minD. 12- 16 times/min |
| Answer» Correct Answer - D | |
| 807. |
Respiratory membrane consists ofA. Alveolar wall and ductsB. Membranes of alveolar ducts and capillariesC. Inner and outer pleural membranes and pleural fluidD. Alveolar wall, alveolar capillary and interstitial space |
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Answer» Correct Answer - D Respiratory membrane consists of alveolar wall, alveolar capillary and interstitial space. |
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| 808. |
Exposure to carbon monoxide (from coal gas) is extremely dangerous and can kill a patient becauseA. The compound carboxyhaemoglobin (COHb) it forms with heamoglobin can gradually clot the blood resulting in circulatory failureB. COHb reduces the ability of blood for transport oxxygen by ruputring a vast majority of erythrocytesC. COHb greatly modifies the structure of haemoglobin, thus makiing it lose its affinity for oxygenD. None of the above |
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Answer» Correct Answer - c COHb is a stable combound fromed by the combination of carbon monoxide and haemoglobin. It has more affinity than oxygen. |
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| 809. |
It is known that exposure to carbon monoxide is harmful to animals becauseA. It reduces `CO_(2)` transportB. it reduces `O_(2)` transportC. In increases `CO_(2)` transportD. It destroys haemoglobin |
| Answer» Correct Answer - D | |
| 810. |
It is known that exposure to carbon monoxide is harmful to animals becauseA. it reduces `CO_(2)` transportB. it reduces `O_(2)` transportC. it increases `CO_(2)` transportD. It increases `O_(2)` transport |
| Answer» Correct Answer - B | |
| 811. |
Normal breathing in called A. ApnoeaB. DyspnoeaC. EupnoeaD. Hyperpnoea |
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Answer» Correct Answer - C Normal breathing in called eupnoea. |
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| 812. |
Although much `CO_(2)` is carried in blood, yet blood does not become acidic, becauseA. `CO_(2)` is absorbed by the leucocytesB. Oxygen combines with haemoglobin to form oxyhaemoglobinC. `CO_(2)` transport and blood buffers play an important role in itD. it is continously diffused through the tissues and is not allowes to accumulate. |
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Answer» Correct Answer - C Althorugh much `CO_(2)` is carried in blood, yet blood does not become acidic. It is due to `CO_(2)` tranport and buffering action of blood. The main buffer present in the blood is bicarbonate (which is formed during `CO_(2)` transport in the blood). Bicarbonate exist in equilibrium with carbonic acid which in trun can be coverted to `CO_(2)` and water. `H_(2)O + CO_(2) hArr H_(2)CO_(3) hArr H^(+) + HCO_(3)^(-)` |
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| 813. |
Methods of locomotion performed by animals vary with their a. Habits b. Habitats c. Level of organisation (d).Demand of the situationA. a and bB. b and cC. b, c and dD. a,c and d |
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Answer» Correct Answer - B Mechanism of breathing vary among different groups of animals depending mainly on their habitats and level of organisation. ‘ |
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| 814. |
Book-lungs are respiratory organs which are found inA. ArachnidaB. MolluscaC. MammalsD. Earthworm |
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Answer» Correct Answer - A Book lungs are respiratory structures is arachnida (scorpion spider, etc). |
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| 815. |
During rest, the metabolic needs of the body are at their minimum. Which of the following Is indicative of this situation ?A. Rate of breathingB. `O_(2)` intake `CO_(2)` outputC. Pulse rateD. All of these |
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Answer» Correct Answer - D Metabolic activities are the sum of physical and chemical processes taking place in the living organisms. Rate of breathing, `O_(2)` intake and `CO_(2)` output and pulse rate slow down indicating that the metabolic needs to the body are at their minimum during rest. |
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| 816. |
Layer of columnar cells with uneven appearance and lining trachea isA. Brush border epitheliumB. Stratified epitheliumC. Pseudostratified epitheliumD. Ciliated epithelium |
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Answer» Correct Answer - C Layer of uneven columnar cells which form tracheal lining are component of pseudostratitied epithelium. |
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| 817. |
In Nereis, gaseous exchange occurs throughA. ParapodiaB. GillsC. LungsD. Skin |
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Answer» Correct Answer - A In Nereis, gaseous exchange occurs through parapodia. |
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| 818. |
voice in mamal producedA. br syrinxB. by bronchusC. During inhalationD. During exhalation |
| Answer» Correct Answer - d | |
| 819. |
Match column I with column II and select the correct option from the given codes ? `{:(,"Column I",,"Column II"),(A.,"Trachea",(i),PO_(2)"in alveolar air"),(B.,"Respiratory centre",(ii),"ATP"),(C,"Yeast",(iii),"Cartilaginous rings"),(D.,"Insects",(iv),"MEdulla oblongata"),(E.,"Fish",(v),"Larynx"),(F.,"Biologically useful energy",(vi),"Tracheal respiration"),(G.,100 "mm Hg",(vii),"Ethanol"),(H.,"Vocal cords",(vii),"Branchial respiration"):}`A. `A-(iii), B-(iv), C-(vii), D-(vi), E-(vii), F-(ii), G-(i), H-(v)`B. `A-(v), B-(ii), C-(vii), D-(viii), E-(vi), F-(iv), G-(i), H-(iii)`C. `A-(vi). B-(iv), C-(viii), D-(v), E-(i), F-(ii), G-(iii), H-(vii)`D. `A-(i), B-(v), C-(vii), D-(iii), E-(viii), F-(ii), G-(iv), H-(vi)` |
| Answer» Correct Answer - A | |
| 820. |
Pneumotaxic centre which can moderate the funcations of the repiratory rhythm centre is present inA. pons region of brainB. thalamusC. spinal cordD. right cerebral hemisphere. |
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Answer» Correct Answer - A Pneumotaxic centre is present in the dorsal part of the pons varoli of the brain. Its function is primarily to limit inspiration. |
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| 821. |
One common feature of the trachea of cockroach and the trachea of mammals is thatA. cilated inner liningB. noncolasible wallC. paired natureD. origin from head region |
| Answer» Correct Answer - B | |
| 822. |
In mammal, voice is produced byA. BronchusB. SyrinxC. LarynxD. Inhalation and exhalation |
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Answer» Correct Answer - C In mammal, voice is produced by larynx (sound box). |
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| 823. |
Trachea is present inA. respiratory zoneB. conductive zoneC. alveolar zoneD. respiratory cum conducting zone |
| Answer» Correct Answer - B | |
| 824. |
th exchange of gases `(O_(2) and CO_(2))` in a mammal takes place inA. tracheaB. bronchiC. bronchioleD. Alveoli |
| Answer» Correct Answer - d | |
| 825. |
the long trachea of rabbit containsA. vocal cordB. thyroidC. complete tracheal cartilageD. incomplete tracheal cartilage |
| Answer» Correct Answer - d | |
| 826. |
larynx is found inA. both frog and rabbitB. netiher frog nor rabbitC. frog but not in rabbitD. rabbit but not in frog |
| Answer» Correct Answer - a | |
| 827. |
the cartilade present I the larynx of rabbit areA. thyroid , cricoid , arytenoidB. thyroid , cricoid , epiglottisC. thyroid , cricoid , ethmoidD. thyroid , cricoid , palatine |
| Answer» Correct Answer - a | |
| 828. |
Study the figure depicting human larynx carefully and answer the following question: (i) some parts are labelled as a,b,c,d,e . Name them (ii) Write one major function of each of these. |
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Answer» (i) (a) Epiglotis (b ) Cartilaginous rings of trachae (c ) Trachea (d ) Larynx (e ) Vocal cord . (ii) Functions of parts : (a) Epiglottis closes the glottis during swallowing to prevent the entry of food into wind pipe . (b) Cartilaginous rings prevent the trachea from collapsing . (c ) Trachea is a wind pipe for passage of air into or out of the lungs. (e ) Vocal cords help in producing sound. |
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| 829. |
Consider for following four statements and select the correct option starting which ones are true `(T)` and which ones are flase (F). (i) Expiration is normally brough about by the relaxation of inspiratory muscles. (ii) Oxyhaemoglobin can hold much less carbon dioxide in the form of carbaminohaemoglobin than what deoxyhaemoglobin can. (iii) A person can expel all the air from the lungs by a forceful expiration. (iv) A rise in `PCO_(2)` increases the oxygen-affinity of haemoglobin.A. `{:("(i)",(ii),(iii),(iv)),(F,F,T,F):}`B. `{:("(i)"1,(ii),(iii),(iv)),(T,T,F,F):}`C. `{:("(i)",(ii),(iii),(iv)),(F,T,T,F):}`D. `{:("(i)",(ii),(iii),(iv)),(T,T,T,F):}` |
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Answer» Correct Answer - B A person cannot expel all the air from the lungs even after forceful expiration. The volume of air which remains in the lungs after the most forceful expiration is called residual volume, it is about `1100 mL` to `1200 mL`. A rise in `PCO_(2)` decreases the `O_(2)` affinity of haemoglobin. |
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| 830. |
match the items in column - I with column - II and choose the correct option A. A-3, B-4, C-2, D-1, E-5B. A-3, B-1, C-2, D-5 , E-4C. A-5,B-1, C-4, D-5, E-4D. A-5, B-4, C-2, D-1, E-2 |
| Answer» Correct Answer - b | |
| 831. |
Match the items in column A with suitable ones in column B : |
| Answer» (a), (c ) , (b) (d ) , (c ) (g ) , (d ) (f) , (e ) (h) , (f ) (b) , (g) (a) , (h) (e )` | |
| 832. |
Match the terms in column A with those in column B |
| Answer» (a) (vi) , (b) (vii) , ( c) (v) , (d) (i) , (e ) (ii) , (f ) (viii) , (g ) (iii) | |
| 833. |
Vital capacity of lungs isA. IRV+ERVB. IRV+ERV+TVC. IRV+ERV+TV-RVD. IRV+ERV+TV+RV |
| Answer» Correct Answer - B | |
| 834. |
vital capacity of lungs of an average human isA. 1200 MlB. 2400 MlC. 4000 MlD. 6000 Ml |
| Answer» Correct Answer - C | |
| 835. |
what is vital capacity of our lungsA. total lund capacity minus residual volumeB. inspiratory reserve volume plus tidal volumeC. total lung capacity minus expiratory resrerve volumeD. inspiratory reserve volume plus expiratory reserve volume |
| Answer» Correct Answer - A | |
| 836. |
match the given in column I with those in column II and select the correct option given below . |
| Answer» Correct Answer - B | |
| 837. |
what is vital capacity of our lungsA. inspiratory reserve volume + expiratory reserve volumeB. total lung capacity -residual volumeC. inspiratory reserve volume + tidal volumeD. total lung capacity - expiratory reserve volume |
| Answer» Correct Answer - B | |
| 838. |
When `CO_(2)` concentration in blood increases breathing becomesA. shallower and slowB. there is no effect on breathingC. slow and deepD. faster and deeper. |
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Answer» Correct Answer - D When `CO_(2)` concentration in blood increases, breathing becomes faster and deeper. The effect of rising `CO_(2)` concentration is due to decrease in affinity of `Hb` for `O_(2)`. Thus, the `CO_(2)` released in the tissues accelrates the delivery of `CO_(2)` (called Bohr effect). due to which breathing becomes faster and deeper. |
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| 839. |
Pressure gradient between the lungs and atmosphere is generated by a-diaphragm, b-external intercostal muscles, c- internal intercostal muscles, d-ribsA. a and bB. a and cC. a,b and cD. a,b,c and d |
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Answer» Correct Answer - D The diaphragm and a specialised set of muscles external and internal intercostals between the ribs, help in generation of pressure gradients. |
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| 840. |
During lactic acid fermentation,………………A. `O_(2)` is used `CO_(2)` is not liberatedB. `O_(2)` is not used `CO_(2)` is liberatedC. `O_(2)` is used `CO_(2)` is liberatedD. Neuther `O_(2)` is used nor `CO_(2)` is liberated |
| Answer» Correct Answer - D | |
| 841. |
What is fermentation ? Does it occur in our body ? |
| Answer» Fermentation is another term for anaerobic respiration that is oxidation of food without oxygen. If occurs in our body in the skeletal muscle during excessive exercise. | |
| 842. |
what is the role of carbonic anhydrase in humans ? Where is it operative ? |
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Answer» Nearly 70% of `CO_(2)` enters the R.B.Cs and reacts with water to form carbonic acid in the presence of enzyme carbonic anhydrase . The carbonic acid dissociates to form bicarbonate ions which are circulated by plasma. `CO_(2) +H_(2)O overset("Carbonic")underset("Anhydrase")(hArr) underset("Carbonic acid ")(H_(2) CO_(3))` `H_(2) CO_(3) hArr HCO_(3)^(-) +H^(+)` `K.HbO_(2) hArr K.Hb +O_(2)` `H^(+) +HCO_(3)^(-) +K.Hb hArr H.Hb +KHCO_(3)` |
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| 843. |
The volume of air that will remain in the lungs after a normal expiration is calledA. Vital capacityB. funcational residual capicityC. residual volumeD. Total lung capacity |
| Answer» Correct Answer - B | |
| 844. |
Which of the following is the most appropirate in normal circumstances ?A. During inspiration, the intrapulmonary pressure is less than than atmospheric pressureB. During expiration , the intrapulmonary pressure is less than the atmosspheric pressureC. During expiration, the intrapulmonary pressure is equal to atmospheric pressure.D. |
| Answer» Correct Answer - A | |
| 845. |
The expiratory reserve volume will beA. 1000 mLB. 2000 mLC. 4000 mLD. |
| Answer» Correct Answer - A | |
| 846. |
Oxygen dissociation curve of myoglobin withA. hypobolicB. hyperbolicC. linearD. sigmoid |
| Answer» Correct Answer - B | |
| 847. |
Oxygen dissociation curve isA. sigmoidB. parabolicC. hyperbolicD. straight line |
| Answer» Correct Answer - A | |
| 848. |
Which of the following factorss ar favorable for the formation of oxyhemoglobin ? (a) High `p_(O_(2))`, low `p_(CO_(2))` (b) Lesser `H^(+)` concentration, lower temperature ( c) Low `p_(O_(2))`, high `CO_(2)` (d) High `H^(+)` , higher temperatureA. (a) onlyB. (a) and (b)C. (b) and ( c)D. ( c) and (d) |
| Answer» Correct Answer - B | |
| 849. |
Under which condition the oxygen dissociation curve will move towards the right ?A. Low `p_(O_(2))`B. High `CO_(2)`C. High `H^(+)` concentrated and higher temperatureD. All of these |
| Answer» Correct Answer - D | |
| 850. |
mark the incorrect statementA. Respiratory centres are found in medulla oblongataB. Near lungs `Cl^(-)` moves out of RBCC. RBCs of deoxygenated blood are slightly bigger than that of oxygenated bloodD. None of the above |
| Answer» Correct Answer - D | |