Which of the following statements about hemoglobin and myoglobin structure are t

Question

Which of the following statements about hemoglobin and myoglobin structure are true? Select the five true statements.

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

Explanation / Answer

Heme is composed of an organic protoporphyrin component and a metal atom ... TRUE!

Both haemoglobin and myoglobin contains a prosthetic group called heme, which contains a central Fe atom.. TRUE

By itself heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron atom.. TRUE.

Molecular oxygen binds reversibly to ferrous in heme... Also TRUE

Each haemoglobin can bind 4 oxygen molecules; each myoglobin can bind only 1 oxygen molecule TRUE

FALSE:

Hemoglobin is heterotetramer whereas myoglobin is a monoer, false, myoglobin is not monomer

Each iron atom can form fix coordingation.... False, not only 1 of these bonds but all

So... choose all but the last two

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