Oxyhemoglobin and DeoxyOnline version Hb and Mb functions and states by Hannah Hand 1 what causes a right shift in a Hb curve a histadine is deprotonated b decreased affinity for O2 c low pH, with increased CO2 d greater partial pressure of O2 on Hb 2 What causes a left shift in the Hb curve? a ionic interactions occurring within Hb (His has a positive charge) b there is an increased affinity for O2 c pH high, decreased CO2 d partial pressure of Hb is low 3 For Fetal Hb, what is true? a O2 loading onto fetal Hb (no BPG) b Fetal Hb has a high affinity for O2 c partial pressure of fetal tissues is low d the curve for fetal Hb is left of maternal curve 4 for maternal Hb curve, what is true? a BPG is absent b Hb has a low affinity for O2 (O2 is being loaded) c partial pressure of tissues if High 5 For a Hb curve, at high altitudes, what is true? a there is an increase in BPG, HB, RBC b there is more O2 being released to tissues (lower affinity) c lower percent O2 saturation d more O2 in the air 6 For the R-State of hemoglobin, a Histidine is deprotonated, at a high pH b BPG is at cleft c there are no ionic interactions d Hemoglobin is bound to oxygen 7 For the T-State of Hemoglobin, a Hb is not bound to oxygen b Histidine is protonated as a result of the Bohr effect; ionic interactions c There is a decrease in the release of O2 from Hb d ionic bridges cause polarity and symmetry of Hb structure
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