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Hemoglobin

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Questions and Answers

What is the structure of hemoglobin?

α4 β4 tetramer

α2 β2 tetramer (correct)

α3 β3 tetramer

α1 β1 tetramer

What triggers a conformational change in adjacent subunits of hemoglobin?

O2 binding to a Hb subunit in the T form (correct)

Deoxygenation of Hb subunit in the R form

Increase in pH in the surrounding environment

Binding of CO2 to a Hb subunit

At what pO2 in the lungs does hemoglobin have a high affinity for O2?

13.3 kPa (correct)

10 kPa

20 kPa

15 kPa

What is the measure of cooperativity in hemoglobin binding?

<p>The Hill Equation</p> Signup and view all the answers

Why can't hemoglobin be 4 myoglobin (Mb)?

<p>Hemoglobin exhibits positive cooperativity</p> Signup and view all the answers

Hemoglobin

Choose a study mode

Podcast

Questions and Answers

What is the structure of hemoglobin?

What triggers a conformational change in adjacent subunits of hemoglobin?

At what pO2 in the lungs does hemoglobin have a high affinity for O2?

What is the measure of cooperativity in hemoglobin binding?

Why can't hemoglobin be 4 myoglobin (Mb)?

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