_______ are stronger than steel when stretched.
Answer: Collagen
fibers
Explanation:
Collagen is a fibrous (insoluble) protein that form long thin
fibrils in the body.
It is the most abundant protein in the animal kingdom (1/3 protein
of the human body)
It is a major component of the extracellular matrix and provides
support to anchor cells.
They provide strength and elasticity to tissues such as skin.
Collagen fibers are stronger than steel when stretched.
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