a] In the process of respiration state the function of alveoli.
b] Rate of breathing in aquatic organisms is much faster than that of terrestrial organisms. Give reasons.
c] Complete the following pathway showing the breakdown of glucose.
`undersetunderset("energy")("3 - carbon molecule")("Glucose" overset("Cytoplasm")rarr(i)overset("Mitochondria")rarr(ii))+H_(2)O+"Energy"`

Explanation

a] Function of alveoli- increases the surface area for exchange of gases.
b] Since the amount of dissolved oxygen in water is fairly low compared to the amount of oxygen in the air, the rate of breathing in aquatic organisms is much faster due to the low concentration of oxygen in the environment than that seen in terrestrial organisms.
c] i] pyruvate ii] `CO_(2)`