difference between myoglobin and hemoglobin?

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Solution

1) Myoglobin contains monomeric protein wheras hemoglobin contains tetrameric protein.
2) Myoglobin consists of a single polypeptide chain and hemoglobin consists of several polypeptide chains.
3)Hemoglobin transports oxygen in blood but myoglobin transports or stores oxygen in muscles.

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The given graph shows the results of the comparison of binding of human hemoglobin and myoglobin to oxygen at different oxygen pressures.

The greatest difference in oxygen saturation between hemoglobin and myoglobin takes place at which of the following pressure?

Myoglobin is

i.An iron- and oxygen-binding protein

ii. found mainly in muscle tissue.

iii. same as hemoglobin

iv. Myoglobin is a monomeric heme

Q. Myoglobin is a heme-containing protein composed of a single polypeptide chain. It is capable of binding oxygen to its heme group. Hemoglobin is a heme-containing protein composed of four polypeptide chains, each chain being capable of binding oxygen to its own heme group.
Structural analysis has revealed the structure of the myoglobin protein to be nearly identical to the structure of the individual polypeptide chains of hemoglobin.
Scientists have compared the primary structure of both myoglobin and hemoglobin proteins from humans to those of other species as a way of tracing evolutionary relatedness. Examine the data table below.

Protein Sequence Differences Between Human and Other Species

	Myoglobin	Hemoglobin
Whales	25	17
Lampreys	64	125
Sharks	88	-
Horseshoe Crabs	-	-

Base on the data table and the information provided regarding the structures of the two molecules, which of the following statements is correct?

Read the passage and answer the following question.

Both myoglobin and hemoglobin are oxygen-binding molecules found in vertebrates. Myoglobin is the major oxygen-binding protein of muscle, whereas hemoglobin is the major oxygen-binding protein of blood. The following graphs called oxygen dissociation curves. On the x-axis is the pressure of oxygen $(O_{2})$ and on the y-axis is the proportion of oxygen binding sites that are filled, referred to as saturation.

Hemoglobin in capillaries of the lungs is exposed to an oxygen pressure of 100. This hemoglobin is transported within red blood cells to capillaries in muscle, where the oxygen pressure is only 20. The condition occurs in the muscle is

Q. Myoglobin stores oxygen for metabolic processes in muscles. Chemical analysis shows that it contains 0.35% Fe by mass. If there is one Fe atom and 6 N atoms per molecule of myoglobin, which of the following option is not correct about myoglobin?
(Molar Mass of Fe = 56 g/mol)

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difference between myoglobin and hemoglobin?

1) Myoglobin contains monomeric protein wheras hemoglobin contains tetrameric protein. 2) Myoglobin consists of a single polypeptide chain and hemoglobin consists of several polypeptide chains. 3)Hemoglobin transports oxygen in blood but myoglobin transports or stores oxygen in muscles.

1) Myoglobin contains monomeric protein wheras hemoglobin contains tetrameric protein.
2) Myoglobin consists of a single polypeptide chain and hemoglobin consists of several polypeptide chains.
3)Hemoglobin transports oxygen in blood but myoglobin transports or stores oxygen in muscles.