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Biology 10 Chapter 10 - Gaseous Exchange - 7
1.
At rest human breath?
a) 16-20 Times per minute
b) 16-21 Times per minute
c) 16-20 Times per second
d) 16-21 Times per second
2.
Rate of breathing is controlled by the respiratory caster?
a) In spinal cord
b) In brain
c) In heart
d) In lungs
3.
Respiratory centre is sensitive to then?
a) Concentration of hydrogen in blood
b) Concentration of oxygen in blood
c) Concentration of air in blood
d) Concentration of CO2 in blood
4.
Great cellular respiration occur during?
a) Walking
b) Running
c) Jogging
d) Rest
5.
Greater cellular respiration results in the production of?
a) Greater hydrogen in blood
b) Greater Haemoglobin in blood
c) Greater CO2 in bloods
d) Greater oxygen in blood
6.
With increase of CO2 production in blood?
a) Rate of breathing will increase
b) Rate of breathing will decrease
c) Rate of breathing will be normal
d) Rate of breathing will slightly equal to the rate at rest
7.
During exercise the rate of breathing will increase upto?
a) 30-40 Times per minute
b) 16-20 Times per minute
c) 30-40 Times per second
d) 16-20 Times per second
8.
Amount of oxygen in inspired air?
a) 16%
b) 79 %
c) 4 %
d) 21 %
9.
Amount of oxygen in expired air is?
a) 16 %
b) 0.04%
c) 21%
d) 4%
10.
Amount of CO2 is inspire air is?
a) 4%
b) 0.4 %
c) 0.004 %
d) 0.04%
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