Multiple Choice
A fully saturated hemoglobin molecule transports how many molecules of oxygen?
26
views
8. Protein Function
Hemoglobin Cooperativity
Struggling with Biochemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following factors does NOT affect hemoglobin's affinity for oxygen?
A
Temperature
B
Concentration of sodium ions (\(\mathrm{Na^+}\))
C
Partial pressure of carbon dioxide (\(\mathrm{CO_2}\))
D
pH (Bohr effect)
Verified step by step guidance1
Understand the factors that influence hemoglobin's affinity for oxygen. These include temperature, partial pressure of carbon dioxide (
), and pH (Bohr effect). These factors are part of the physiological regulation of oxygen binding and release.
Recall that the Bohr effect describes how pH influences hemoglobin's oxygen affinity. A decrease in pH (more acidic conditions) reduces hemoglobin's affinity for oxygen, facilitating oxygen release in tissues.
Understand that temperature also affects hemoglobin's oxygen affinity. Higher temperatures reduce oxygen affinity, which is beneficial during active metabolism as it promotes oxygen release.
Recognize that the partial pressure of carbon dioxide (
) influences hemoglobin's oxygen affinity. Increased
levels lower oxygen affinity, aiding oxygen release in tissues with high metabolic activity.
Finally, note that the concentration of sodium ions (
) does NOT directly affect hemoglobin's oxygen affinity. This is the correct answer to the question.
Related Videos
Related Practice
Hemoglobin Cooperativity practice set
Problem sets built by lead tutorsExpert video explanations