Carbaminohaemoglobin (10-20%) is formed when CO2 combines with:
Correct answer: A. Amino group of haemoglobin
- A. Amino group of haemoglobin
- B. Iron is part of haemoglobin
- C. heme portion of haemoglobin
- D. Plasma proteins
Explanation
Carbaminohemoglobin is a stable complex of carbon dioxide and hemoglobin that forms in red blood cells upon contact with carbon dioxide.
This question appeared on the UHS MDCAT 2016 paper, which you can sit online with every answer explained.
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The human respiratory system conducts air to the alveoli, where oxygen and carbon dioxide exchange occurs across thin respiratory surfaces. Questions cover the nasal passage, trachea, bronchi, lungs, diaphragm and intercostal muscles, ventilation mechanics and gas transport, while distinguishing breathing and gaseous exchange from cellular respiration.
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