Q17Multiple choice
When we breathe in air, nitrogen also goes inside along with oxygen. What is the fate of this nitrogen?
- (a)It moves along with oxygen into the cells
- (b)It comes out with the CO 2 during exhalation
- (c)It is absorbed only by the nasal cells
- (d)Nitrogen concentration is already more in the cells so it is not at all absorbed.
Show answer
(b) It comes out with the CO 2 during exhalation