Inhaled air contains about 21 % oxygen. What is the approximate percentage concentration of oxygen in exhaled air?
Inhaled air contains about 21 % oxygen. What is the approximate percentage concentration of oxygen in exhaled air?
a) The arrows marked A and B represents the direction of exchange of gas during normal breathing process. Answer the following
(i) Which gas does A represents? .............................
(ii) Which gas does B represents? .............................
cell
.
glucose + oxygen → ____ + ____ + energy
1. cerebrum
2. cerebellum
and
3. medulla oblongata.
( please answer fast )