Question

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

• A. only ii) is correct.
• B. i) and ii) are correct.
• C. i), ii) and iv) are correct.
• D. all statements are correct.

Answer 1

The correct option is C

i), ii) and iv) are correct.

Myoglobin is a specialized oxygen carrier protein, similar to the better-known hemoglobin. Whilst hemoglobin circulates in the blood and facilitates oxygen transport, myoglobin is present in the skeletal muscle (i.e. those muscles that allow you to move) where it enables oxygen storage.
Hemoglobin is a tetramer consisting of two dimers that bind to oxygen.Myoglobin is a monomeric protein.