BioChemistry > EXAMs > BiochemC785 Module 3 exam (All)

BiochemC785 Module 3 exam

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Myoglobin and hemoglobin each have different numbers of subunits and this affects their respective oxygen storage and delivery capabilities. How many subunits do myoglobin and hemoglobin each have? S ... elect one: a. Two, Three b. One, Two c. One, Four Correct! Myoglobin consist of one and hemoglobin consists of four subunits. The number of subunits affects their respective oxygen storage and delivery capabilities. d. Four, One Addition of alters the shape of the iron–heme complex, and therefore its absorption of light as indicated by its color change from dark purple (the color of hemoglobin in venous blood) to brilliant scarlet (the color of hemoglobin in arterial blood). Select one: a. iron b. oxygen Correct! c. globin subunit d. porphyrin Oxygen binding alters the structure of an entire hemoglobin tetramer, so the structures of oxyhemoglobin and deoxyhemoglobin are noticeably different. The oxyhemoglobin conformation is specifically referred to as the state, whereas the deoxyhemoglobin conformation is referred to as the state. Select one: a. O and D CONTINUED........ [Show More]

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