During exercise, there is an Increase in oxygen consumption and carbon dioxide in skeletal muscle

During exercise, there is an increase in oxygen consumption and carbon dioxide in skeletal muscle. Which of the following is the primary form in which carbon dioxide is transported from the skeletal muscle to the lungs? Bicarbonate Carbaminohemoglobin Carbonic acid Dissolved carbon dioxide 79.

Which of the following best explains why fetal hemoglobin (HbF) has higher affinity for oxygen than HbA?$$\mathrm{HbF}$$binds 2,3-bisphosphoglycerate with lower affinity One of the coordination positions of$$\mathrm{HbF}$$is occupied by a Asp residue Oxygen binding is not cooperative in$$\mathrm{HbF}$$The Fe-O bond is shorter in$$\mathrm{HbF}$$The hermes of$$\mathrm{HbF}$$and$$\mathrm{HbA}$$have different structures