Answer question #8 and confirm question #9. The oxygen binding curves of myoglob

Question

Answer question #8 and confirm question #9.

The oxygen binding curves of myoglobin and hemoglobin for the following two items. 1007Myoglobin 80 2 60 Arterial po2 Hemoglobin e 40 20 0 Venous p02 +---- 0 20 40 60 80 100 120 Po, (torr) 0 8. Based on the above figure, which protein displays allostery in oxygen binding? a. myoglobin b. hemoglobin . c. both of them d. none of them e. cannot determine by the figure as a higher binding affinity to oxygen? Which protein h a. myoglobin hemoglobin c. the same d. cannot judge based on the curve e. the binding affinity depends on oxygen pressure

Explanation / Answer

8 b. Hemoglobin

Sigmoidal curve shows this.

9 a. Myoglobin

Hyperbolic curve shows this .

Myoglobin is found intracellularly in the body tissue. For effective binding with oxygen it has higher affinity.

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