Based on this activity which system is more efficient at taking up O_2 from air

Question

Based on this activity which system is more efficient at taking up O_2 from air into the blood with RBC or just without RBC? What role does hemoglobin play in oxygen ? As you saw in the case of oxygen uptake, concentration gradient plays vital role in the update of CO2 molecules from the body into blood and release of CO2 from blood in the into the space. If CO2 was just carried as dissolved CO2 in the plasma we would be able to transport only a small fraction of what we need to most of the CO2 is in fact carried as HCO3- (ions). Write the equation that shows how CO2 is converted into HCO3- The following activity will illustrate the role concentration gradient plays in removing carbon dioxide from the cells into the plasma. Your objective will be to try to keep the following at equilibrium: CO_2 molecules will try to maintain equilibrium between cell and plasma. CO_2 molecules will combined with H_2CO_3 molecules in the plasma (imagine that there is an infinite supply of water molecules). Every time you combine CO_2 with water, replace these two buttons with one button for H_2CO_3. These will try to stay in equilibrium. H_2CO_3 molecules will try to be in equilibrium with HCO_3- and H+ (for every molecule of H_2CO_2 there will be 1 molecule of HCO_3- and 1 molecule of H+) Use the following equation as a guide to the transfer of molecules and irons. CO_2 + H_2O rightarrow H_2CO_3 rightarrow H+ + HCO3- Starts with 20 molecules of CO_2 in the cells Remember CO_2 molecules diffuse into the plasma along the concentration gradient. Try to make sure that the CO_2 molecules in the plasma stay in equilibrium with the CO_2 molecules in the tissue cells. In the plasma, the CO_2 molecules combine with water to form H_2CO_3. Make the H_2Co_3 molecules dissociate. If there were no HCO_3- formation how many CO_2 would be taken up by blood? What role does HCO_3 play in the body's capacity to remove carbon dioxide? Write the equations that show the steps in releasing carbon dioxide from pulmonary into space. How does this process affect the pH of the blood?

Explanation / Answer

please do following corrections:

17. Role of Hemoglobin in oxygen uptake:

One Hemoglobin molecule binds with 4 molecules of O2. Hb carries the bound oxygen to tissues. In tissues Hb exchanges Oxygen for carbon dioxide.

Equation for conversion of CO2 into HCO3- is:

CO2 + H2O -------(carbonic anhydrase enzyme)----> H2CO3- -----------> H+ + HCO3-

Related Questions

Navigate

• Browse (All)
• Browse B
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.