4. Oxygenating myoglobin. The myoglobin content of some human muscles is about 8 g kg 1. In sperm whale, the myoglobin content of muscle is about 80 g kg 1 . (a) How much O 2 is bound to myoglobin in human muscle and in sperm whale muscle? Assume that the myoglobin is saturated with O 2, and that the molecular weights of human and sperm whale myoglobin are the same. Berg, Jeremy M.. Biochemistry (p. 213). W. H. Freeman. Kindle Edition.

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Tringa0 Tringa0 · Answer 1 · 2019-10-23T07:38:33+02:00

Answer:

0.01454 grams of oxygen is present per kilogram of human muscle.

0.1454 grams of oxygen is present per kilogram of sperm whale muscle.

Explanation:

Given : The myoglobin is fully saturated with oxygen gas.

Moles of myoglobin = Moles of oxygen gas

Molecular mass of myoglobin = 17,600 g/mol

(assumed same fro whale and human )

Myoglobin content in humans = 8 g/kg

Mole of molyoglobin in human muscles per kg :[tex]\frac{8 g/kg}{17,600 g/mol}[/tex]

Mass of oxygen present in per kg of human muscle:

Moles of oxygen gas × 32g/mol :

[tex]\frac{8 g/kg}{17,600 g/mol}\times 32 g/mol=0.01454[/tex] g/kg of human muscle

Myoglobin content in whales= 80 g/kg

Mole of molyoglobin in whale muscles per kg :[tex]\frac{80 g/kg}{17,600 g/mol}[/tex]

Moles of myoglobin = Moles of oxygen gas

Mass of oxygen present in per kg of sperm whale muscle:

Moles of oxygen gas × 32g/mol :

[tex]\frac{80 g/kg}{17,600 g/mol}\times 32 g/mol=0.1454[/tex] g/kg of whale muscle