question_answer 25)

  dissociates from carbamino haemoglobin when (a)  is high and  is low                                (b)  is high and  is low (c)  and are equal                                       (d) None of the above

Answer:

                  (b) When, the  is low and is high as in the lung alveoli, dissociation of  from carbamino-haemoglobin takes place,  which is bound to haemoglobin from the tissue is delivered at the alveoli, to maintain the concentration of thus increasing Exchange of gases takes place between tissue capillary and tissue cells. Capillary cells with high  causes diffusion of  into tissue cells via tissue fluid on the other hand high in the tissue cells causes diffusion of into tissue capillary via tissue fluid.