- A3 crore
- B300 million
- C350,000
- D5 lakhs
Explanation:
Alveoli are the site of respiration inside the lungs. The human lungs have 300 million alveoli with a total area of about 100m2 which is 50 times than that of the skin surface.
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$I$. causes partial oxidation of glucose (one molecule) to form $2$-molecules of pyruvic acid and $2$ $ATP$ as net gain
$II$. takes place in all living cells
$III$. uses $2$ $ATP$ at two steps
$IV$. scheme was given by Gustav Embden, Otto Mayerhof and J Parnas
Choose the correct option containing appropriate statements from the above
$R$ : Ionic channels are absent in the area covered by myelin sheath therefore, depolarization occurs only at the nodes of Ranvier, resulting in saltatory or jumping conduction.