If a hemoglobin molecule comes into close contact with a respiring cell, the presence of CO₂ in the environment will cause hemoglobin to bind to more oxygen molecules (if it is not already bound to four).

Question

Quizplus · Accepted Answer

Hemoglobin's affinity for oxygen is decreased in the presence of CO2, increased H+ concentration (lower pH), increased temperature, and 2,3-BPG, which are conditions typically found in respiring tissues, leading to the release of oxygen to those tissues.

If a Hemoglobin Molecule Comes into Close Contact with a Respiring