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nmdcat.online June 27, 2026

The classification of a protein as “fibrous” rather than “globular” implies that its structure is

A. Highly soluble and metabolically active
B. Folded into a compact, spherical shape
C. An energy storage form in seeds
D. Elongated, insoluble, and primarily performing structural roles
✓

📝 Explanation

Fibrous proteins (e.g., collagen, keratin) have long, chain-like, repetitive secondary structures that form strong, water-insoluble fibers. Their primary role is structural support, contrasting with the soluble, dynamic, roughly spherical nature of globular proteins like enzymes and antibodies.

📖 Additional Information

  • Highly soluble and metabolically active
  • Folded into a compact, spherical shape
  • An energy storage form in seeds
  • Elongated, insoluble, and primarily performing structural roles

Fibrous proteins (e.g., collagen, keratin) have long, chain-like, repetitive secondary structures that form strong, water-insoluble fibers. Their primary role is structural support, contrasting with the soluble, dynamic, roughly spherical nature of globular proteins like enzymes and antibodies.

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