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BIOLOGY

Biology
Function of heart in human body

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

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Biology
Function of hemoglobin is

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

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Biology
At the time of inspiration the diaphragm

Expand
Contract
Does not under any change
Relaxed

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Biology
Rate of breathing in a minute by man is

16-18
20-25
15311
70-72

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Biology
The C shape of the tracheal cartilages is important because

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

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