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The Bohr effect refers to the phenomenon where:
Carbon dioxide binds to hemoglobin more readily in acidic conditions
Oxygen binds to hemoglobin more readily in basic conditions
Carbon dioxide binds to hemoglobin more readily in basic conditions
Oxygen binds to hemoglobin more readily in acidic conditions
Answers (1)
The Bohr effect is a physiological phenomenon that describes the influence of pH on the binding and release of oxygen by hemoglobin. In acidic conditions (low pH), such as those found in metabolically active tissues, carbon dioxide levels tend to be higher. This increased concentration of carbon dioxide leads to the formation of carbonic acid, which lowers the pH of the blood.
When the pH decreases (becomes more acidic), hemoglobin undergoes a conformational change that weakens its affinity for oxygen. As a result, hemoglobin releases more oxygen to the surrounding tissues. This allows the oxygen to be delivered to areas with higher metabolic demands.
Conversely, in basic conditions (high pH), such as in the lungs where carbon dioxide levels are lower, the pH is higher. In this situation, the affinity of hemoglobin for oxygen is increased, promoting oxygen binding to hemoglobin.
Hence, the correct answer is option 1.
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