The difference between normal and sickle-cell hemoglobin is _____.
A) the number of amino acids in the molecule
B) the substitution of one amino acid for another
C) the number and orientation of the amino acid chains attached to the heme portion of the molecule
D) the number of oxygen molecules that can be carried
E) the types of blood cells that produce each protein

Question

​The difference between normal and sickle-cell hemoglobin is _____.
A) ​the number of amino acids in the molecule
B) ​the substitution of one amino acid for another
C) ​the number and orientation of the amino acid chains attached to the heme portion of the molecule
D) ​the number of oxygen molecules that can be carried
E) ​the types of blood cells that produce each protein

Quizplus · Accepted Answer

The difference between normal and sickle-cell hemoglobin is due to the substitution of one amino acid for another (valine for glutamic acid) in the hemoglobin protein, which affects the protein's structure and function.

​The Difference Between Normal and Sickle-Cell Hemoglobin Is _____

The Difference Between Normal and Sickle-Cell Hemoglobin Is _____