Which of the Following Is Not Correct Concerning Myoglobin

question 16

Multiple Choice

Which of the following is not correct concerning myoglobin?

• A) The globin chain contains an extensive α-helix structure.
• B) The heme group is bound to the globin chain by two disulfide bonds to cysteine residues.
• C) The iron of the heme group is in the Fe⁺² oxidation state.
• D) The diameter of the iron ion decreases upon binding to oxygen.
• E) The function of myoglobin is oxygen storage in muscle.

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Definitions:

Anionic Polymerization

A type of chain-growth polymerization where the active center of the polymer is a negatively charged ion or anion.

Expected Product

The chemical species that is predicted to form as a result of a particular chemical reaction under specified conditions.

Regio-

A prefix in chemistry indicating the region or position in a molecule where a particular reaction occurs or a specific substituent is located.

Stereochemical

Pertaining to the spatial arrangement of atoms within molecules and how this influences the properties and reactions of those molecules.