Myoglobin Structure and Function Quiz

What is the primary function of myoglobin in vertebrates?

In deep-diving mammals, how does the concentration of myoglobin in muscles compare to that in terrestrial mammals?

According to Henry's Law, what relationship is observed regarding the solubility of a gas in a liquid?

What is the approximate partial pressure of oxygen ($PO_2$) in tissues where myoglobin functions?

Which of the following statements about myoglobin is incorrect?

Myoglobin: Structure and Function

Myoglobin is a protein found in muscle tissue of vertebrates and almost all mammals.
Myoglobin facilitates the diffusion of oxygen into cells.
Myoglobin has a higher concentration in deep-diving mammals compared to terrestrial mammals, acting as an oxygen storage molecule in this case.
Myoglobin is an iron- and oxygen-binding protein.
Myoglobin is present at a high concentration in muscle tissue (around 2 mg/g).

Oxygen Binding Curve for Myoglobin

Myoglobin's oxygen binding follows Henry's Law: The solubility of a gas in a liquid is directly proportional to the pressure of that gas above the surface of the solution.
The oxygen binding curve for myoglobin is hyperbolic.
Myoglobin has a high affinity for oxygen.
Oxygen partial pressure (PO2) in tissues is around 30 torr.
Oxygen partial pressure (PO2) in venous blood is around 40-50 torr.
Oxygen partial pressure (PO2) in arterial blood is around 80-100 torr.

Myoglobin in Different Species

The concentration of myoglobin varies across species.
Flounder has very little myoglobin (around 0%).
Chicken has some myoglobin.
Beef has a significant amount of myoglobin.

Test your knowledge about myoglobin, a vital protein in muscle tissue that plays a key role in oxygen storage and transport. This quiz covers its structure, function, and oxygen binding properties. Perfect for students studying biology or related fields.