Hemoglobin is a:
Correct answer: C. Globular protein
- A. Fibrous protein
- B. Coiled protein
- C. Globular protein
- D. Double coiled protein
Explanation
Haemoglobin is a globular protein, meaning it has a roughly spherical shape and is soluble in water, which allows it to transport oxygen in the blood efficiently. It is composed of four polypeptide chains, each containing a heme group that binds oxygen. This functionality and structure distinguish it from fibrous proteins, which are typically insoluble and structural, and from any simplistic descriptions like 'coiled' or 'double coiled,' which do not accurately describe its complex quaternary structure.
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