Which of the following is a function of the polypeptide of myoglobin?
A)protects the heme iron from oxygenation
B)keeps the heme iron in the ferric form
C)provides a pocket for iron to fit
D)cradles the heme group

Question

Quizplus · Accepted Answer

The polypeptide of myoglobin cradles the heme group, which is the site where oxygen binds. The heme group consists of an iron atom, and the polypeptide provides a specific pocket for the iron to fit. This interaction allows myoglobin to bind and release oxygen selectively. Therefore, choice D is the correct function of the polypeptide of myoglobin.

Which of the Following Is a Function of the Polypeptide