The Difference Between Normal and Sickle-Cell Hemoglobin Is Based Upon

question 36

Multiple Choice

The difference between normal and sickle-cell hemoglobin is based upon the __________________.  

• A) number of amino acids in the molecule
• B) substitution of one amino acid for another
• C) number and orientation of the amino acid chains attached to the heme portion of the molecule
• D) number of oxygen molecules that can be carried
• E) type of bone marrow that produces it

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