Monday, March 11, 2019

Breathing and exchange of gases: Previous Year Questions Part 2

BREATHING AND EXCHANGE OF GASES

2013 MARCH
1.     Pick out the wrong one and justify your selection. (2)
a.     VC=ERV+IRV+TV
b.     TLC=VC+RV
c.     TV=500 ml
d.     ERV= 3000 ml
2013 OCTOBER (IMPROVEMENT)
1.     Observe the diagram and answer the following question: (2)
a.   Name the biological process involved in the gas exchange shown in the figure. (½)
b.   How the oxygen is transported to cells from the alveoli? (1½)    
2014 MARCH
1.     Blood transports CO2 from tissues to lungs by various means. Mention any two methods of the same. (2)
AUGUST 2014 (IMPROVEMENT)
1.    
a.   What is represented by the above graph?
b.   Write any three factors which can influence the sigmoid curve of this graph. (½ +1½= 2)
2015 MARCH
1.     Asthma and emphysema are two disorders of the human respiratory system. Mention their causes and symptoms. (2)
2015 SEPTEMBER (IMPROVEMENT)
1.     Correct the following misconceptions of a student regarding human respiration.
a.   Vital capacity includes tidal volume, residual volume and dead air.
b.   Respiration is controlled by nerve centres located in hypothalamus and cerebrum. (2)

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