Which of the following statements about hemoglobin and myoglobin structure are true? Select the five true statements.
Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron atom.
Heme is composed of an organic protoporphyrin component and a metal atom.
Hemoglobin is a heterotetramer, whereas myoglobin is a monomer.
Molecular oxygen binds reversibly to Fe2+ in heme.
Each hemoglobin or myoglobin molecule can bind four oxygen molecules.
Each iron atom can form six coordination bonds: Two of these bonds are formed between iron and oxygen.
By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron atom.
Which of the following statements about hemoglobin and myoglobin structure are true? Select the five true statements.
Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron atom.
Heme is composed of an organic protoporphyrin component and a metal atom.
Hemoglobin is a heterotetramer, whereas myoglobin is a monomer.
Molecular oxygen binds reversibly to Fe2+ in heme.
Each hemoglobin or myoglobin molecule can bind four oxygen molecules.
Each iron atom can form six coordination bonds: Two of these bonds are formed between iron and oxygen.
By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron atom.
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