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BIOLOGY

Biology
Function of heart in human body

To increase temperature
Work like pumping machines
None of these
To release energy

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Biology
Function of hemoglobin is

None of these
To transport oxygen
Destruction of bacteria
To check the loss of blood

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Biology
At the time of inspiration the diaphragm

Relaxed
Does not under any change
Expand
Contract

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Biology
Rate of breathing in a minute by man is

70-72
16-18
15311
20-25

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Biology
The C shape of the tracheal cartilages is important because

All of these
Provide a surface for the sense of smell
Divide the nasal cavity
Allows for expansion or contraction of the trachea

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