The site of gas exchange in mammals is at the blind-ended sacs called __________.
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Q37: Hemoglobins get their color from
A)heme.
B)iron.
C)protein.
D)copper.
Q38: In most mammals,the effect of increased 2,3-DPG
Q39: The ideal ventilation perfusion ratio for the
Q40: If lung compliance decreases,then
A)inhalation requires more energy.
B)inhalation
Q41: If a fish swims forward with its
Q43: Environmental hypoxia leads to the following pathological
Q44: The _ is the region of a
Q45: In mammals,the trachea branches into two _.
Q46: A vertebrate can store oxygen in a
Q47: The total volume of air moved in
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