278164
Arrange the given steps of respiration in the sequence of their occurence.
1 (iv)-(i)-(ii)-(v)-(iii)
2 (iii)-(ii)-(v)-(i)-(iv)
3 (v)-(iv)-(iii)-(ii)-(i)
4 (i)-(ii)-(iii)-(iv)-(v)
Explanation:
(a) The correct sequence of the events of respiration is - (iv)-(i)-(ii)-(v)-(iii).
Major steps involved in respiration are:
Step 1: $\text{C}{{\text{O}}_{2}}$ goes out and atmospheric air is drawn in. Step 2: Diffusion of gases $\left( {{\text{O}}_{2}} \right.$ and $\left. \text{C}{{\text{O}}_{2}} \right)$ through alveolar membrane.
Step 3: Transportation by blood.
Step 4: Diffusion of ${{\text{O}}_{2}}$ and $\text{C}{{\text{O}}_{2}}$ between blood and tissues.
Step 5: Utilisation of ${{\text{O}}_{2}}$ by cells for catabolic reactions.