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BIOLOGY

Biology
Function of heart in human body

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

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Biology
Function of hemoglobin is

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

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Biology
At the time of inspiration the diaphragm

Contract
Does not under any change
Expand
Relaxed

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Biology
Rate of breathing in a minute by man is

15311
70-72
16-18
20-25

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Biology
The C shape of the tracheal cartilages is important because

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

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