Which statements are true/false
(a) Blood transports CO2 comparatively easily because of its high solubility.
(b) Approximately 8.9% of CO2 is transported dissolved in plasma.
(c) CO2 diffuses into blood, passes into RBCs and reacts with water to form H2CO3.
(d) Oxyhaemoglobin of erythrocytes is basic.
(e) Chloride ions diffuse into erythrocytes to maintain ionic balance.
Which statements are true/false
(a) Blood transports CO2 comparatively easily because of its high solubility.(b) Approximately 8.9% of CO2 is transported dissolved in plasma.
(c) CO2 diffuses into blood, passes into RBCs and reacts with water to form H2CO3.
(d) Oxyhaemoglobin of erythrocytes is basic.
(e) Chloride ions diffuse into erythrocytes to maintain ionic balance.
The correct option is B a, c and e are true, b and d are false
Correct statements
(a)Blood transports CO2 comparatively easily because of its high solubility.
The solubility of CO2 is 20−25 times higher than that of O2. Hence, about 7% of CO2 is transported in the dissolved form in plasma to the lungs.
(c) CO2 diffuses into blood, passes into RBCs and reacts with water to form H2CO3.
Carbonic anhydrase enzyme is present in significant amounts in RBCs and in minor quantities in plasma too. This reversibly catalyses the conversion of CO2 and H2O into H2CO3. H2CO3 dissociates into H+ and HCO3-. Around 70% CO2 is transported this way.
a, c and e are true, b and d are false
Correct statements
(a)Blood transports CO2 comparatively easily because of its high solubility.The solubility of CO2 is 20−25 times higher than that of O2. Hence, about 7% of CO2 is transported in the dissolved form in plasma to the lungs.
(c) CO2 diffuses into blood, passes into RBCs and reacts with water to form H2CO3.
Carbonic anhydrase enzyme is present in significant amounts in RBCs and in minor quantities in plasma too. This reversibly catalyses the conversion of CO2 and H2O into H2CO3. H2CO3 dissociates into H+ and HCO3-. Around 70% CO2 is transported this way.
5% of CO2 is dissolved in ___(i)____. Another form in which CO2 is transported is when it combines with hemoglobin and this form is called ___(ii)____hemoglobin. CO2 entering the erythrocytes reacts with water to form carbonic acid in the presence of ____(iii)_____. Carbonic acid is an intermediate step; it dissociates to form a hydrogen ion (H+) from the carbonic acid, leaving___(iv)____ dissolved in the blood.
