Respiration MCQ Questions and Answers Quiz

41. 2,3 DPG causes shifting of Oxygen dissociation curve in Adult Hb to Right because

  1. It increases Oxygen affinity for Hemoglobin
  2. It binds to Beta chain of Hb
  3. Its concentration is high in adults
  4. It lacks Hb binding sites

42. Dead air is not involved in respiration because

  1. It is very low quantity
  2. It is trapped in nasal passage
  3. It contains less Oxygen
  4. It is present deep in the lungs

43. Opercular gills are found in

  1. Lepidosteus
  2. Polypterus
  3. Anabas
  4. Both a and b

44. In which part of the body Mycobacterium tuberculosis affects

  1. Lungs
  2. Skin and Meninges
  3. Intestine
  4. All these

45. The impulse for voluntary muscles for forceful breathing starts in

  1. Medulla ( Pons )
  2. Vagus nerve
  3. Cerebral hemispheres
  4. Spinal cord

46. The Alveolar epithelium is lined with

  1. Non- ciliated Squamous epithelium
  2. Ciliated Squamous epithelium
  3. Ciliated epithelium
  4. Ciliated Columnar epithelium

47. Which of the following gas mixture is used by Divers to prevent Oxygen toxicity

  1. Oxygen and Co2
  2. Oxygen and Nitrogen
  3. Oxygen and rare gases
  4. Oxygen, CO2 and Nitrogen

48. Oxygen dissociation curve shows the relation between

  1. Oxyhemoglobin saturation and Oxygen tension
  2. Oxyhemoglobin saturation and Carbon dioxide level
  3. Oxyhemoglobin formation and dissociation
  4. Partial pressure of Oxygen and Partial pressure of Carbon dioxide

49. The common drugs used against TB is

  1. Para amino salicylic acid ( PAS )
  2. Ethambutol
  3. Steptomycin
  4. All these

50. Carbonic anhydrase in the RBC is the fastest enzyme and it decompose in one second for fast action. Its concentration in the blood due to the presence of

  1. Plasma
  2. Carbon dioxide
  3. Sodium ions
  4. Hemoglobin
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