Gaseous Exchange in Humans Quiz
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Most of the carbon dioxide produced by the body tissue is transported to the lungs in the form of …
A. Carbonic acid.
B. Blood plasma.
C. Bicarbonate ion.
D. Carbaminohaemoglobin.
Which of the following is NOT the structure of haemoglobin?
A. Each haemoglobin molecule contains 4 haem group
B. Haemoglobin is a quaternary structure
C. Every each haem group in haemoglobin can bind with 4 molecule of oxygen
D. Each haemoglobin has 2 α-chain and 2 β-chain polypeptide subunits
Which of the following is not correct about alveolus?
A. Thick wall
B. Thin wall
C. Moist wall
D. Large surface area
Oxygen diffuses from
A. Trachea to lung
B. Alveolus to blood capillary
C. Blood capillary to alveolus
D. Lung to trachea
An asthmatic patient’s bronchiole walls become ………… and thick.
A. big
B. swollen
C. soft
D. rough
Which of the following disease causes continuous coughing?
A. asthma
B. chronic bronchitis
C. emphysema
D. gastrisis
Oxyhaemoglobin gives up O2 when …
A. CO2 concentrations are high.
B. Body temperature is lowered.
C. pH values are high.
D. O2 concentrations are higher.
Name A
A. Trachea
B. Lung
C. Alveolus
D. Blood capillary
In ……… , the alveolus loses its elasticity and increases in size.
A. asthma
B. chronic bronchitis
C. emphysema
D. gastrisis
Gaseous exchange is by process of
A. respiration
B. diffusion
In ……… , bronchiole becomes inflamed, swollen and blocked.
A. asthma
B. chronic bronchitis
C. emphysema
D. gastrisis
Name B
A. Trachea
B. Lung
C. Alveolus
D. Blood capillary
Describe the nature of movement of oxygen within the blood and surrounding tissues
A. Moves down its electrochemical gradient
B. Moves down its partial pressure
C. Requires protein channels to diffuse across membranes
D. Moves out into the alveolar space from the capillaries
The bronchiole walls in an asthmatic patient becomes swollen and thick which leads to the following except
A. the opening of the bronchiole tube becomes larger
B. the air passage becomes narrower
C. difficulties in breathing
D. breathlessness
Carbon dioxide diffuses from ________ to alveolus
A. trachea
B. lung
C. blood capillary
D. bronchus