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Which of the following statements about hemoglobin and myoglobin structure are true? Select the five true statements.
1. By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron.
2. Molecular oxygen binds irreversibly to the Fe(II) atom in heme.
3. Heme is composed of an organic protoporphyrin component and a metal atom.
4. Each hemoglobin molecule can bind four oxygen molecules; each myoglobin can bind only one oxygen molecule.
5. Hemoglobin and myoglobin are heterotetramers.
6. Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron atom.
7. Each iron atom can form six coordination bonds: One of these bonds is formed between iron and oxygen.
After Abutment Connection The patient may complain of pain during screw tightening. Any clinical evidence should be looked into. It is important not to overtighten and overtorq
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