Chondroitin sulfate is abundant in the matrix of

The correct answer to this is:

Chondroitin sulfate is abundant in the matrix of “Cartilage”.

A 1 unit of Chondroitin sulfate has a chemical formula of C13H21NO15S. It is usually found attached to proteins as part of a proteoglycan and is a vital structure of cartilage by providing much resistance to compression. Due to this, this chemical has found wide use as a dietary supplement for treatment of osteoarthritis.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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