Top 150+ Solved Breathing and Exchange of gases MCQ Questions Answer
Q. Volume of air breathed in and out during effortless respiration is (Kerala 2001)
a. residual volume
b. vital volume
c. tidal volume
d. normal volume
Q. Body tissue obtain oxygen from haemoglobin due to its dissociation in tissues caused by (M.P.PMT.1995)
a. Low oxygen concentration and high carbon dioxide concentration
b. Low oxygen concentration
c. Low carbon dioxide concentration
d. High carbon dioxide concentration.
Q. Lungs have a number of alveoli for (M.P.PMT.1995)
a. Having spongy texture and proper shape
b. More surface area for diffusion of gases
c. More space for increasing volume of inspired air
d. More nerve supply.
Q. Presence of large number of alveoli around alveolar ducts opening into bronchioles in mammalian lungs is (C.B.S.E.1995)
a. Inefficient system of ventilation with little of residual air
b. Inefficient system of ventilation with high percentage of residual air
c. An efficient system of ventilation with no residual air
d. An efficient system of ventilation with little residual air.
Q. During transport of CO2 blood does not become acidic due to (C.B.S.E.1995)
a. Neutralisation of H2 CO3 by Na2 CO3
b. Absorption by leucocytes
c. Blood buffers
d. Non accumulation
Q. At high altitude,RBCs of human blood will (C.B.S.E.1995,Pb.PMT.1999,J.LPM.E.R.2000)
a. Increase in number
b. Decrease in number
c. Decrease in size
d. Increase in size
Q. CO2 is transported (C.B.S.E.1095)
a. dissolved in blood plasma
b. As carbonic acid
c. In carbaminohaemoglobin
d. As carbaminolaemoglobin and carbonic acid
Q. Maximum amount 70-75% of carbon dioxide transport occurs as (R.P.M.T.1996,1998,Kamataka 1997,M.P.PMT.1998,C.P.M.T.1998,B.V.2002)
a. Dissolved in plasma
b. Carbaminohaemoglobin complex
c. Bicarbonate
d. None of the above
Q. Trachea is lined with incomplete rings of (D.P.M.T.1996)
a. Fibrous cartilage
b. Calcified cartilage
c. Elastic cartilage
d. Hyaline cartilage
Q. Oxygen and carbon dioxide are transported in blood through (CB.S.E.1996)
a. Platelets and corpuscles
b. RBCs and WBCs
c. WBCs and serum
d. RBCs and plasma
Q. About 1500 ml of air left in lungs is called (CB.S.E.1996)
a. Tidal volume
b. Inspiratory reserve volume
c. Residual volume
d. Vital capacity
Q. Which one protects the lungs? (B.H.U.1990)
a. Ribs
b. Vertebral column
c. Sternum
d. All the above
Q. Which one has the lowest value?
a. Tidal volume
b. Vital capacity
c. Inspiratory reserve volume
d. Expiratory reserve volume
Q. A child was killed through asphyxiation. Post morturm confirmed it because a piece of lung put in water (M.P.PMT.1996)
a. Settled dowm
b. Kept floating
c. Had blood spots
d. None of the above