Which of the following correctly describes mechanisms of CO transport?
20% of CO2 is dissolved directly into the plasma.
Carbonic anhydrase converts 02 to CO2.
Carbonic anhydrase is responsible for bonding CO2 to hemoglobin.
The chloride shift mechanism enhances CO2 transport.
7-8% of CO2 is carried in the form of carbaminohemoglobin.
The answer is "7-8% of CO2 is carried in the form of carbaminohemoglobin."
The correct statements regarding the mechanisms of CO (carbon monoxide) transport are:
1. 7-8% of CO2 is carried in the form of carbaminohemoglobin. This means that a small percentage of CO2 binds directly to hemoglobin, forming carbaminohemoglobin.
2. The chloride shift mechanism enhances CO2 transport. This is where chloride ions (Cl-) move out of red blood cells, leading to an exchange of bicarbonate ions (HCO3-) to maintain electric neutrality. This process allows for the efficient transport of CO2 from tissues to the lungs.
Therefore, the correct answer is:
- The chloride shift mechanism enhances CO2 transport.
- 7-8% of CO2 is carried in the form of carbaminohemoglobin.