Which of the following is a fibrous protein?
- A. Haemoglobin
- B. Insulin
- C. Collagen
- D. Amylase
Explanation
Collagen forms long rope-like triple helices that give strength to skin, tendons and bone, the hallmark of fibrous proteins. Haemoglobin, insulin and amylase are compact, soluble globular proteins built for transport, signalling and catalysis rather than for strength.
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