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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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colleen colleen
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11 years ago
A hemoglobin molecule is composed of
A) just two protein chains.
B) just three protein chains.
C) just four protein chains and nothing else.
D) four protein chains and four heme groups.
E) four heme groups but no protein.
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padrepadre
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11 years ago
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