Biology
Assertion (A): The product of combination of carbon dioxide and haemoglobin is termed as carboxyhaemoglobin.
Reason (R): RBCs carry carboxyhaemoglobin from the tissue cells to blood capillaries. Hence, carbon dioxide gas is exhaled out.
- A is True and R is False.
- A is false and R is True.
- Both A and R are True.
- Both A and R are False.
Respiratory System
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Answer
Both A and R are False.
Reason — The combination of carbon dioxide with haemoglobin forms carbaminohaemoglobin, not carboxyhaemoglobin. Carboxyhaemoglobin is formed when carbon monoxide (CO) binds with haemoglobin not CO2.
RBCs carry carbon dioxide as carbaminohaemoglobin. Carboxyhaemoglobin is not involved in normal CO2 transport; it is formed due to CO poisoning.
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