Of the carbon dioxide entering the blood at the capillaries, about 76 percent travels in which form?

1. Carbon dioxide entering the blood at the capillaries splits into two main fractions. 2. About 76 percent dissolves in the plasma, some staying as dissolved gas and the remainder forming bicarbonate ion. 3. The other 23 to 24 percent binds to the amino acids in hemoglobin. 4. So the majority fraction is the plasma one, not the hemoglobin one. 5. Binding to the amino acids of hemoglobin describes the minority fraction and is the trap built on the same sentence. 6. The iron ions of heme bind oxygen, not carbon dioxide, so that option confuses the two gases. 7. Albumin carries fatty acids, steroid hormones and bilirubin, not the carbon dioxide load. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 18 "The Cardiovascular System: Blood", section 18.3 Erythrocytes_