Biology - Breathing and Exchange of Gases Question with Solution | TestHub
Given below are two statements about the oxygen dissociation curve.
Statement (I): The relationship between HbO saturation and oxygen tension (ppO) is called oxygen dissociation curve.
Statement (II): Oxygen dissociation curve shifts towards the right due to decrease in H concentration and decrease in temperature.
In light of the above statements, choose themost appropriateanswer from the options given below.
Options:
Answer:
Solution:
Statement (I) is correct. The oxygen dissociation curve is a graphical representation of the relationship between the partial pressure of oxygen (pO) and the percentage saturation of hemoglobin with oxygen.
Statement (II) is incorrect. The oxygen dissociation curve shifts to the right when there is a decrease in oxygen affinity of hemoglobin. This occurs due to an increase in H concentration (decrease in pH), an increase in partial pressure of CO (pCO), and an increase in temperature. A decrease in H concentration and a decrease in temperature would shift the curve to the left.
Answer: Statement (I) is correct but Statement (II) is incorrect.
