Respiration — Biology MCQs (Class 12)
Free chapter-wise Biology MCQs with answers for MDCAT, FSc and entry tests.
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#9 The mechanical process of taking the air in and out out of the lungs is called
A) Respiration
B) Inspiration
C) Expiration
D) Breathing
#10 Emphysena often leads to
A) Asthma
B) Heart Diseases
C) Bronchitis
D) Lung cancer
#11 The rate and depth of respiration increases when
A) O2 conc. increases
B) CO2 conc.Increases
C) Bicarbonate conc. increases
D) Bicarbonate conc. decreases
#12 The amount of air that moves in and out of the lungs with each inspiration and expiration is called
A) Residual volume
B) Tidal volume
C) Vital capacity
D) Lung volume
#13 Which one of the following prevents the trachea from collapsing
A) Muscels
B) Diaphragm
C) Ribs
D) Cartilagginous rings
#14 During the process of transport of CO2 which phenomenon occurs between RBC and plasma
A) Osmosis
B) Adsorption
C) Chloride shift
D) absorption
#15 Molecules attached to the diaphragm contract during inspiration to make it
A) Flat
B) Dome - shaped
C) Concave
D) Rotate
#16 In human beings the number of lobes in the right and left lungs is
A) 2 and 3
B) 2 and 2
C) 3 and 2
D) 3 and 3
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