All of the following can bind to haemoglobin except:
Correct answer: A. HCO3
- A. HCO3
- B. O2
- C. H+
- D. CO2
Explanation
Factual Recall. Note that: 70% of carhon dioxide is transported in the form of NaHCO3 as CO2 combines with amine group of haemoglobin. H+ combine with haemoglobin to form reduced haemoglobin. O2 attaches to haemoglobin to form oxyhaemoglobin.
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About Digestion
The human digestive system covers the organs from mouth to anus, the movement of food, and the mechanical and chemical breakdown of carbohydrates, proteins and fats. It also includes the roles of digestive enzymes, bile, absorption through intestinal villi, and the assimilation of nutrients by body cells.
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