Hemoglobin''s affinity for oxygen

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Reference no: EM13281662

1. Hemoglobin's affinity for oxygen:

a. is higher than myoglobin's due to the greater number of heme groups.

b. is higher than myoglobin's due to the absence of a distal his.

c. is actually lower than myoglobin's as demonstrated by its larger P50.

d. None of the above are correct .

2. The hemoglobin produced in the body of an infant:

has a larger P50 than the hemoglobin found in an adult. Wrong

has a larger Kd for BPG than would be expected for adult hemoglobin.

is comprised of two beta and two gamma subunits. Wrong

contains gamma subunits that place negatively charged side chains in the BPG binding site. Wrong

None of the above.

3. The P50 of the heme for carbon monoxide:

is much smaller when found in the context of myoglobin, as compared to free heme, due to the presence of the distal His in myoglobin.

is much larger when found in the context of myoglobin, as compared to free heme, due to the presence of the distal His in myoglobin.

is much smaller when found in the context of myoglobin, as compared to free heme, due to the presence of the proximal His in myoglobin.

is much larger when found in the context of myoglobin, as compared to free heme, due to the presence of the proximal His in myoglobin.

Reference no: EM13281662

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