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Which of the following statements about hemoglobin is TRUE?
a. For any given O2 partial pressure, the oxygen saturation for hemoglobin is higher than for myoglobin.
b. The binding of oxygen to a hemoglobin molecule diminishes the binding of additional oxygen to the same hemoglobin molecule.
c. The glycolysis intermediate, BPG (2,3-bisphosphoglycerate) raises the oxygen affinity of hemoglobin, which is essential in enabling hemoglobin to unload oxygen in tissue capillaries.
d. Oxyhemoglobin (that is, hemoglobin bound to oxygen) and deoxyhemoglobin differ markedly in quaternary structure.
e. The affinity of hemoglobin for oxygen depends on pH and CO2. Both H+ and CO2 inhibit the release of bound oxygen.

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Hope I helped thanksss

DanielCastro

Answer:

The statements about hemoglobin that are true are the following:

d. Oxyhemoglobin (that is, hemoglobin bound to oxygen) and deoxyhemoglobin differ markedly in quaternary structure.

Explanation:

The structure of deoxyhemoglobin called T state, on the other side oxyhemoglobin is called R state. And these characteristics make it easier to pass from one to the other because the process is an interaction between the 1b1 and the 2b2 dimers that make them rotate and bind strongly. If those structures and natures wouldn't exist, they wouldn't be able to change from one to the other. But is because they are different that they can.

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