What happens during the toxic effect of carbon monoxide $(CO)$?

  • A
    Increase in carbon dioxide concentration.
  • B
    Decrease in oxygen availability.
  • C
    Decrease in free hemoglobin.
  • D
    None of the above.

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Which of the following combines irreversibly with blood haemoglobin?

Identify the given curve.

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Select the right options for $A, B, C$ and $D$ to complete the given statement.

In what form is the $CO_2$ released from body tissues into the blood transported?

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