Which of the following statements regarding the transport of oxygen by hemoglobin is correct? Upon binding of oxygen to heme, a shift in the position of the distal His ultimately induces t switch from T to R states When fully bound to oxygen, AG(R-state)

Which of the following statements regarding the transport of oxygen by hemoglobin is correct? Upon binding of oxygen to heme, a shift in the position of the distal His ultimately induces t switch from T to R states When fully bound to oxygen, AG(R-state)

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter8: Blood

Section: Chapter Questions

Problem 3RQ

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Question

Which of the following statements regarding the transport of oxygen by hemoglobin is correct?
Upon binding of oxygen to heme, a shift in the position of the distal His ultimately induces the
switch from T to R states
When fully bound to oxygen, AG(R-state)<AG(T-state)
The prosthetic group composed only of protoporphyrin IX forms the heme unit critical for
oxygen binding
Hemoglobin has higher affinity for oxygen than it does for carbon monoxide
The T-to-R state transition causes a change within the aß-dimer, but does not change the
dimers relative to each other

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