Question

identify the forms in which carbon dioxide is transported in the blood.
check all that apply
bicarbonate ion
dissolved gas
carbaminohemoglobin
carboxyhemoglobin
bound to heme

Explanation:

Carbon dioxide is transported in the blood in three main forms. Bicarbonate ion ($HCO_3^-$) is formed when $CO_2$ reacts with water in red blood cells, a process catalyzed by carbonic anhydrase. A small amount of $CO_2$ is simply dissolved in the plasma as dissolved gas. Carbaminohemoglobin is formed when $CO_2$ binds to the amino groups of hemoglobin. Carboxyhemoglobin is formed when carbon monoxide ($CO$) binds to hemoglobin, not $CO_2$. And $CO_2$ does not bind to the heme group of hemoglobin (heme binds to $O_2$ and $CO$, not $CO_2$ in a significant transport - related way).

Answer:

Bicarbonate ion, Dissolved gas, Carbaminohemoglobin