BIO NMDCAT Human skeleton

nmdcat.online July 27, 2026

A laboratory specimen becomes brittle after heating, which destroys its collagen fibers while leaving minerals intact. This observation demonstrates that collagen is responsible for:

A. Bone rigidity

B. Bone flexibility

✓

C. Bone mineral storage

D. Formation of osteons

📝 Explanation

Correct: Collagen provides tensile strength and flexibility. Without it, bone becomes brittle. A: Rigidity depends mainly on minerals. C: Minerals are stored in the matrix. D: Osteons are structural units, not formed by collagen alone. Concept: Organic matrix of bone.

📖 Additional Information

Bone rigidity
Bone flexibility
Bone mineral storage
Formation of osteons

Correct: Collagen provides tensile strength and flexibility. Without it, bone becomes brittle. A: Rigidity depends mainly on minerals. C: Minerals are stored in the matrix. D: Osteons are structural units, not formed by collagen alone. Concept: Organic matrix of bone.

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