Oxygen Dissociation Curve

Practice questions on Oxygen Dissociation Curve

The 'Oxygen Dissociation Curve' of hemoglobin shifts to the RIGHT in which of the following conditions?

• Decreased temperature
• Increased pH (alkalosis)
• Increased PCO2 (Bohr effect)
• Decreased 2,3-BPG

Answer: C. A right shift (reduced affinity, easier O2 offloading) is caused by increased H+ (lower pH), increased CO2, increased temperature, and increased 2,3-BPG.