Consider the following statements regarding human respiratory pigments: 1. Hemoglobin is an iron-containing conjugated protein found inside red blood cells. 2. Hemocyanin is a copper-containing respiratory pigment found in the blood of many molluscs and arthropods. Which of the statements given above is/are correct?

💡 Solution & Explanation

Hemoglobin is the primary respiratory pigment in vertebrates, utilizing an iron porphyrin heme group to transport oxygen efficiently. Hemocyanin utilizes copper atoms instead of iron and appears blue when oxygenated, serving respiratory functions in various invertebrates like molluscs and crustaceans. Both statements accurately describe biochemical adaptations for oxygen transport across diverse animal phyla. Oxygen binding affinity is influenced by physiological factors such as pH, carbon dioxide concentration, and temperature.