Top 150+ Solved Breathing and Exchange of gases MCQ Questions Answer
Q. In carbon monoxide poisoning there is (A.F.M.C 1997)
a. Increase in carbon dioxide concentration
b. Decrease in oxygen availability
c. Decrease in free haemoglobin
d. None of the above.
Q. Exchange of gases in lung alveoli occurs through (CB.S.E.1998,A.FMC.2002)
a. Active transport
b. Osmosis
c. Simple diffusion
d. Passive transport
Q. The cells which do not respire (A.FMC.2001)
a. Epidermal cells
b. Sieve cells
c. Cortical cells
d. Erythocytes
Q. Hiccough (hiccup) is due to activity of (Manipal 2001)
a. Intercostal muscles
b. Food in air tract
c. Diaphragm
d. Inadequate oxygen in environment
Q. Bicarbonate formed inside erythrocytes moves out to plasma while chloride of plasma pass into erythrocytes.The phenomenon is called (Kerala 2001,2003)
a. Bicarbonate shift
b. Carbonation
c. Hamburger phenomenon
d. None of the above
Q. Respiratory centre of brain is stimulated by (A.I.I.M.S 2000)
a. Carbon dioxide content in venous blood
b. Carbon dioxide content in arterial blood
c. Oxygen content in venous blood
d. Oxygen content in arterial blood
Q. A higher CO2 concentration of blood causes (AM U.2001)
a. Slow diffusion of co2 from blood
b. Slow transport of CO2 from blood
c. Slow diffusion of o2 from blood
d. Both A and B
Q. Gases diffuse over the respiratory surface because of (Manipal 2002)
a. O2 is more in alveoli than in blood
b. O2 is more in blood than in tissues
c. CO2 is more in alveoli than in blood
d. PCO2 is more in blood than in tissues
Q. Dissociation curve of O2 (which is dissociation from Hb) shifts to the rights....
a. O2 concentration decrease
b. CO2 concentration decreases
c. CO2 concentration increase
d. Chloride concentration increases
Q. Thoracic cage of man is formed of (M.P.P.M.T.2002)
a. Ribs and sternum
b. Ribs,sternum and thoracic vertebrae
c. Ribs,sternum and lumbar vertebrae
d. Ribs and thoracic vertebrae.
Q. Vital capacity of lung is equal to (Karnataka 2002)
a. IRV+ERV+TV
b. IRV+ERV+TV-RV
c. IRV+ERV+TV+RV
d. IRV+ERV
Q. Dead space is (Manipal 2003)
a. Upper respiratory tract
b. Nasal chambers
c. Alveolar space
d. Lower respiratory tract.
Q. Carbon monoxide contained in Tobacco smoke (A.I.E.E.E.2003)
a. Is carcinogenic
b. Causes gastric ulcers
c. Reduces oxygen carrying capacity of blood
d. Raises blood pressure