Engineer & Medical

Breathing and Exchange of question bank (Biology)

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Q1.

Entry of food into trachea is prevented by ___________.

(A)
Gullet
(B)
epiglottis
(C)
glottis
(D)
iter
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Q2.

Before the formation of oxyhaemoglobin, the $\text{O}_2$ has to pass through _________ membranes from the alveolar air.

(A)
$2$
(B)
$7$
(C)
$3$
(D)
$4$
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