It is not fibrous:
Correct answer: A. Haemoglobin
- A. Haemoglobin
- B. Myosin
- C. Silk
- D. Fibrin
Explanation
The correct answer is Haemoglobin. Haemoglobin is a globular protein, characterized by its compact and spherical structure, which is crucial for its function in oxygen transport. In contrast, proteins like Myosin, Silk, and Fibrin are fibrous. Myosin forms long fibrils necessary for muscle contraction, Silk's beta-pleated sheets grant it strength and flexibility, and Fibrin's fibrous networks are critical for blood clotting, all typical features of fibrous proteins.
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About Biological Molecules
The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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